A/N: Well it's the last chapter! I hope you've enjoyed this little story, I've really enjoyed writing it and the reaction I've gotten has been great! I have a few other ideas for K/S stories so we may meet again. (Also a possible companion piece to this, but only possibly)

Oh, also there's explicit sex in this chapter (though you should already know that) but if you don't want to read it, the first line afterwards is "Then Spock's head moved up, glancing from side to side" so if you want to skip it, go to that.

The route to the house was longer than he had expected and he spend most of it running away (in the nicest way possible) from an animalistic, predatory Spock. The change in him was quite extraordinary; this side of him that was so instinctive and basic had clearly been buried deeply inside his psyche. Jim already looked ravished and they hadn't even gotten to the house yet, there were at least three marks on his neck that he knew of and Spock had already managed to tear his shirt of. That would be difficult to explain when they returned to the transporter room.

"I really hope nobody's home." He joked breathlessly, glancing back at Spock before opening the door to the house and jogging inside. Spock didn't answer, rather just growled, shoulders hunched forwards and darted towards him, pinning him against the wall, making him gasp with the force. Obviously he was done allowing Jim to run.

Up until now, Jim had been very passive, his main goal being to get them to the house so that they didn't have to fuck in the sand. But he could give as good as he took and he refused to lie there and be submissive. He pushed his hands underneath Spock's shirt, dragging his nails along his back and caught his mouth in a kiss.

Spock was not inexperienced with kissing, he and Uhura had made that quite clear while they were together. But there was little finesse to this kiss, but a rough, urging dominance and he caught Jim's lips between his teeth, sucking on it. Jim broke the kiss, pushing Spock away slightly which made him growl. "Mine." Spock hissed and for a second, Jim was taken aback that he had finally spoken.

"Yeah, yeah." He muttered in reply, pushing Spock back slightly so he could grab his shirt and pull it over his head. "But we can't fuck if we still have clothes on." He wasn't sure why he was still talking, he didn't think Spock could still hear him but he liked talking during sex. He threw Spock's shirt away and to apologise for having pushing him away he grabbed his ass and squeezed. Spock had such a great bum and he finally got to properly appreciate it.

He used his grip to pull Spock against him, pressing their hips eagerly together. Spock responded with a low growl from the back of his throat and fucking hell it was such a hot sound. He ground his hips against Jim's, and he could feel his erection through the tight Starfleet issue trousers. He purred gently in approval, squeezing more.

He kissed Spock again and Spock kissed back so harshly that his lips were swollen. Jim's hips were jerking instinctively against Spock's, rutting against each other like animals. Spock grabbed his arms and pulled them away from his hips, pinning them above them against the wall. He dipped his head in to Jim's neck neck and sucked on the skin. Jim gave a sharp intake of breath and gasped. He bit down and his body arched against Spock's, moaning.

But Jim didn't like being submissive. He knew that in the end he would have to be, this time at least, but he wasn't going to go down without a fight, Spock would have to earn it. His foot hooked around Spock's leg and used it to trip him, pushing him to the ground, even though Spock still had his hands. He straddled him, returning the love bites. He bit down hard and Spock gave an audible cry of pleasure. It sounded delicious, so badly did he want to illicit that sound from Spock again, especially when he was back in his right mind. It would be even more of a triumph then.

He pulled his hands away as he had the advantage from his position, grabbing Spock's hair roughly with one hand. He'd always wanted to mess up that perfect, stupid hair of his. He pulled his head up to kiss him, biting his lip somewhat harshly. He felt Spock's chest rumble as he growled, and he was sure that a human couldn't make such a sound. Spock's hands hooked around his waistband and he sharply pulled his trousers and underwear down to his knees, hands kneading at Jim's buttocks. He groaned and shifted a little bit backwards in to the hands and so that he could reach down and palm Spock's cock through his trousers. His hips jerked and he made a strangled noise.

He smirked, leaning in, pushing Spock's hands away from his bum a little reluctantly pinning them down by his sides while he leaned in, kissing along his jaw. His tongue darted out on his neck and pressed his tongue against his pulse point. His lips caught the lobe of his ear and then his tongue darted upwards along the pointed shell of his ear.

Spock gasped and arched upwards, but then growled, pushing Jim up and rolling them over so he was on top instead, "Submit to me." He hissed.

Jim grinned at the sound of the challenge, "Make me." He purred, baring his teeth in an instinctive action of challenge. Spock practically roared as he descended upon Jim, tearing the remnants of his clothes. In response Jim raked his fingers along Spock's back, nails digging in deeply to try and cause a reaction.

Spock's hands traced his front, along his chest and across his back. One hand caught a nipple and pinched, causing him to hiss and dig his nails deeper in to Spock's back. He would have to check and see if he had drawn blood later. HIs legs were pushed apart and the long, thin hands trailed upwards from his ankles, along his thighs and squeezed. They were pushed up and over Spock's shoulders, which made him shiver a little bit. It made him a little uncomfortable, he didn't like to feel so exposed.

He wouldn't give up yet. He slipped his legs out and put his heel on his shoulder, pushing him back. He jumped up slightly in to a crouch and on top of Spock, his hands moving to Spock's trousers and pulling them down, pinning him down to stop him from moving.

He took a moment to look over Spock, fully naked. Well that was one question answered; Vulcans had a biology that was very similar to humans. He grabbed Spock's knees and pushed them down to keep him still, positioning himself on top of his legs.

He took a hold of his cock, stroking a few times. He was already very hard, whether that was a pon farr thing or just pure arousal he didn't know and though it fleetingly crossed his mind, there were more important things to think about. He bowed his head slightly and his tongue darted out against the head of his cock, eyes rolled upwards as high as possible in order to watch Spock.

Spock gasped lowly and his head fell back against the floor. Jim grinned, slowly licking along the shaft. He loved giving oral sex, with men and women. It gave him a sense of power and dominance while giving pleasure to the other person. He pressed his lips to the head and slowly took him in, listening to the sounds he was making.

A hand wound in his hair and he growled in warning, but the hand did not move just yet. He was asserting some dominance, Jim didn't like it but he sucked gently, sliding up and down. Spock gasped quietly, his hand tightening its hold to an almost painful level.

Jim opened his mouth, breaking the pressure and moving up to look at him. There was a whine and an insistent tug on his hair. "Let go." He hissed, "Or I won't do it." Spock snarled in response and pushed down again, more insistently, but he refused to yield. "Let go." He repeated. The grip loosened but didn't release.

He opened his mouth again and continued, sucking again with a little more pressure. His tongue worked against the underside, and the gasps Spock was making turned to whimpers. He pulled away, and Spock pulled on his head, but he refused. Spock growled and pushed harder, but Jim remained adamant. So instead Spock deployed a different tactic. Hand still wound in his hair, he pulled Jim's head back violently, making him grunt, and so his neck was exposed. He used his hold to pull Jim up, shifting his own position in to once of dominance and pressed himself bodily against Jim, head in his neck. "Submit." He hissed.

Though it hurt and was largely ineffectual, he jerked his head away, nearly wincing as it tugged on his hair. "No." He breathed. The free hand was running up his thigh, the fingers digging deeply in to his flesh. He reached his ass and squeezed roughly, making Jim gasp. Spock was not gentle but it felt so good. The fingers squeezed and pulled at them while at the same time Spock went for his neck to make another mark. He kept jerking his head away and generally not being submissive, but it was more of a symbolic gesture than a practical one. He was rather trapped and enjoying it.

Then he felt a finger pressing against his hole and he twitched, jerking away. "Be careful" He hissed, grabbing his hand and holding it away. He reached over for one of the lube sachets and shakily opened with his teeth. He pulled Spock's hand in front of him and squeezed it on to his fingers. One of them had to be sensible, and since it was his ass on the line, he decided he would do it this time. "Now you can." He said.

He held the wrist firmly and slowly moved his fingers along Spock's, caressing them and spreading the lubricant. As he did so, Spock paused from his attack on his neck to look over at him, at the way he was caressing his fingers. In the moment of quiet, Jim smiled and pressed a kiss to the top of Spock's fingers. Then, he let go of Spock's wrist and the battle began again.

The hand in his hair jerked his head back again and he made a slight surprised and choked noise and panted. The fingers returned, squeezing his arse. He twitched at the feeling of the wet, cold lube on his skin.

Spock changed their positions, moving his hand from Jim's hair to the front of his neck, using his hold to push Jim down to the ground. He froze automatically, but he didn't try to escape because he knew that it would make him tighten his hold. He raised a hand and tried to alleviate the pressure, lying submissively on his back. Spock moved between his legs, pushing his legs to the side.

The fingers probed against his hole again and he breathed deeply, trying to be relaxed and calm. He shuddered slightly as he felt the finger slowly push inside against all the resistance. Spock was lucky this wasn't the first time he had done this.

Since Spock was somewhat distracted, he pulled the hand off his neck, grunting slightly, and put his arm in the way to block. He relaxed more now he wasn't panicking about his neck and the finger slipped more easily inside him, making him sigh in pleasure. Spock attempted to grab his neck again but he blocked, growling at him, "No." He hissed.

He could feel the finger and how close it was to his prostate, making him whimper but he refused to shift or jerk his hips to get closer. Spock was silent, but he saw an almost mischievous look in Spock's eyes. He returned it with a stony, defiant gaze.

Another finger made its way inside him and he gasped lowly, attempting to relax again. Any tensing at this point would be very bad. The fingers stretched and scissored, and he was panting slowly, trying to keep himself still. He pulled Spock down with a hand on his shoulder, kissing him, pulling his legs in towards his chest to make room for Spock on top of him.

Spock licked at his lips and he opened them to a possessive tongue which explored his mouth. Then the fingers darted against his prostate and his hips jerked automatically, making him call out. He lay there and panted frantically. Spock smirked and he growled in response, not liking the way Spock was looking at him.

The third finger pushed inside him and it was a little uncomfortable, making him grunt. He held on to Spock's shoulder, fingers digging in to his shoulder blade, other arm still protecting his throat. The flesh yielded somewhat to his nails, his nails sinking deeply in to Spock's shoulder blade.

He was slowly being stretched, being made to accommodate his fingers. He thrust them roughly, making Jim's breath harsher. Then the fingers started massaging his prostate and Jim's nails dug deeper in to Spock's shoulder. He gasped, shuddering, his back arching. Spock pressed down on top of him, fingers pressing deeper and rolling against his prostate. He moaned loudly, gasping and jerking his hips roughly. He let out a string of curses which ended up in just a pleasured whine.

This went on for far too long for Jim's liking. Spock was methodical and dexterous, Jim was rolling his hips, gasping desperately for breath. "Spock." He muttered, "Spock, stop teasing me." The fingers pressed against his prostate again very firmly and he rolled his hips again in response, but the movements were weaker. "Spock please, I can't take any more." He huffed, fingers digging very deeply.

Spock didn't answer, he just growled. Spock was trying different ways of moving his fingers along his prostate and gauging his reactions. Even in this animalistic state Spock was learning, processing. Jim jerked, twisting, spine jerking upwards against Spock. "God, Spock, fuck me." He moaned, "Is this what you want? For me to beg?" His eyes rolled back.

Spock moved in closer, leaning in, and his lips went to Jim's ear, teeth brushing against the shell of his ear. His breathing was so soft and rhythmic but insistent, pressing in against his head. Spock didn't even have to speak for him to know what he had to say. His fingers pushed against his prostate once more and Jim groaned. "I submit!" He finally said, pulling his arm away from his throat and pushing it up in to the air to present it, "Fuck everything I submit!"

Spock's fingers pulled out abruptly and he licked slowly along his neck, teeth biting down on the skin again. Jim, distracted, moaned and reached out to grab another of the lube sachets. He tore it open, hands shaking, and spread it over his hand, reaching down and wrapped his hand around Spock's member, slicking it with the lube.

He shuddered at the contact, lifting his head from Jim's neck. Slowly, he released his grip, bringing both his arms around Spock, holding on to him. He managed a small smile, shifting his hips towards Spock encouragingly. He ached with the arousal from all the teasing.

Then, there was pressure against his ass, he reached down, slowly guiding Spock in. For the first moment, it was slow, Spock hissing lowly and Jim gasping, shivering and arching his back, he was glad, it gave him time to get over the jolt of pain while he adjusted to the intrusion. He held on to Spock, pushing their bodies together. The thrusting began slowly, almost gently, while Jim desperately anchored himself to Spock.

It was a process. First, slow, shallow movements, gradually sliding in deeper, then he began to deepen the thrusts, pulling his hips back before pushing back in. They went silent apart from the sound of their breath, gasping and panting, the pressure and friction of bodies. Jim's hips moved slightly, adjusting the angle in an attempt to get deeper or if possible hit his prostate. In response to his movements, speeding up, thrusting harder.

Then, Spock paused, shifting slightly so his weight was all on one arm. He reached down between them, and Jim felt his hand wrap around his cock, making him moan and shiver, hips moving upwards towards the hand.

Their movements became more erratic, thrusting, jerking against each other. Jim pressed his head against Spock's neck, pressing in to him and desperately clinging as the tension built up. Then Spock's hand moved away, making him whine, and his head was pushed down on to the floor, so they were staring at each other.

The hand reached up and touched his head, making contact with his meld points. At once, his world exploded in to colour again. He felt Spock in his head, felt his pleasure along with his own. He experienced them both. Mentally he reached for Spock, and everything felt so much better, so much more intense and heightened.

It was like fireworks, the heat, the fire, burning brightly. He felt it burst in front of his eyes and he gasped, jerking his hips. The fireworks turned white and nearly blinded him, his mouth open in a wide o. Then, they all exploded at once, everything.

They climaxed, Jim's back arching taught in the air against Spock, and Spock tensed above him, crying out. Then they flopped down against the floor, Spock limp against him. His hand slipped from Jim's head and for a few seconds they just lay there, still connected, and panted for breath.

Then Spock's head moved up, glancing from side to side then down to Jim. He hesitated, "Cap-"

Jim put a hand up, pressing it to Spock's lips, "Jim. I think captain is a bit formal for this situation." His fingers lingered there as he watched Spock's face and saw, for the first time since before the ceremony, clarity in him again. His eyes widened. He hadn't realized before, but Spock had been in the blood fever for so long, he hadn't been aware for half the things he had done. He hadn't even consented to their bonding as Kirk had had the luxury to do. "Do you remember it?"

He shook his head, "Not completely, like a dream." He said, "It will… piece together." He mused, slowly sliding out and moving away from Jim.

But he was grabbed and pulled back down. He didn't want to leave the warmth just yet. "Humor me for a few moments." Jim said, "Before we have to be getting back to the ship." Slowly, Spock relaxed again, arms curling in around Jim, holding on to him. "Thank you." He muttered. A hand went up to touch Spock's hair, which had fallen back almost perfectly in to place despite what they'd done. "Does it bother you?" He asked, "That I chose this. Would you have liked time to choose?"

Spock was silent for a few seconds, contemplating, "I resigned myself long ago to the fact that I had no choice in the matter. T'Pring was chosen for me a long time ago so even if you had not been here, I would have had no choice in the matter." He looked softly at Jim, almost fondly, "I would have always preferred you to her. Though you and I had no prior romantic relationship, we at least had some relationship. I hadn't met T'Pring since we were children." He paused a moment, Jim watching him blink, "Besides, she didn't love me, she loved Stonn. If he hadn't died, no doubt she would have not settled for me." It seemed blunt to Jim, but he supposed it was 'logical'. "The bond chose you long ago, and that is more significant to me than any conscious choice I could have made."

This meant Jim could relax a little, for a moment he had begun to feel guilty that he had forced Spock in to something that he'd not wanted or had any choice in. Wrapped up in his own selfish thoughts and feelings, it hadn't even crossed his mind. He pushed it out of his mind for the time being. He had other questions to ask. "The bond… can you feel me in your head?"

Spock nodded, "There is a definite presence"

"Oh." Jim frowned, "I can't feel anything." He said. He closed his eyes and concentrated, but he didn't feel any different at all. He couldn't help but feel that he was missing out.

"That's because humans don't explore their minds in the same was as Vulcans. With meditation and training you'll be able to consciously affect the bond."

"What do you mean, consciously? Will I do it unconsciously?"

"Some amount of emotional bleed is typical." Jim grinned and opened his mouth to speak, but before he could, Spock, a slight smirk twitching the corner of his mouth, cut him off. "Yes, I did say emotion. Outward emotion is frowned upon, however, the bond between the thy'la-"

"Thy'la?" Jim interjected suddenly. Hadn't Spock Prime used the same term earlier?

"It is our word for soulmate. It has no literal translation, it simply means everything; friend, brother, lover." He moved a hand to brush Jim's fringe away from his eyes. "You are my thy'la." Jim smiled, liking the sound of that word, especially the way Spock said it. "As I was saying, the bond between thy'la is a very deep, sacred bond. Sharing emotion is a deeply intimate part of that bond."

"Will we be able to… communicate through it?" He asked. He knew it sounded dumb but he was curious.

Spock shook his head, "Not as if we were speaking over a communicator, no. Bonded partners however, are better able to predict their partner's movements and understand subtle body language. Words don't travel over the bond, but intent can, particularly in high stress situations."

"It sounds like you've studied it." Jim laughed.

Spock quirked an eyebrow, "We are Vulcan; if there is something we do not understand, we study it. The bond is an integral part of our biology and our culture. Naturally we have studied it."

"Right, I forgot who I was talking to." Jim muttered. "So will you feel my emotions and stuff?"

"On occasion, if they are strong enough. I have learned to build up mental barriers, and you will have to as well. It makes the sharing of a mind much more bearable." He explained. "Feeling someone else's emotions, I imagine, would be quite disturbing at times."

He nodded, "Understandable." He kissed Spock gently on the lips. "So are you acting so agreeable and… human now because my happy fluffy human emotions are affecting you?"

Spock gave an uncomfortable face, "Unfortunately." He said, "However, I think that the sexual activity has probably also played a part."

Jim laughed, "Embrace it. There's nothing wrong with being a little more human. You used to smile for me often when we were children."

"That was a simpler time."

"It still proves you can smile, though." He sighed slightly, "I suppose I'm never going to see your home on Vulcan now, am I?"

He shook his head, "Short of a highly unlikely time irregularity occurring, no. However, you have now seen my family home on New Vulcan, which is close."

He nodded, "Yeah, I suppose so, but it still didn't happen." He smiled, "At least you can finally go down to the lake and go fishing with me." He grinned.

"That would be an acceptable use of shore leave." Which, Jim assumed, was Spock-talk for 'I'd love to'.

"I wonder if mom would remember you." He smiled, then caught glimpse of a clock and sighed, "We should get ready to go back to the ship." He said, putting his hands down to slide out from under Spock. He picked up his pants which were still serviceable, but his shirt was still in tatters outside somewhere. "So this whole… pon farr blood fever thing is over now, right?" He asked, pulling on his underwear, casually eyeing Spock as he did the same. He hadn't had much time to actually check Spock out during their frenzied session.

"Not quite." Spock admitted, "While I am lucid now, the actual symptoms don't completely die down for a few days." He couldn't help but groan slightly; he wasn't sure how much more of it he could physically take. Spock quirked an eyebrow, "Was the sex that unpleasant?" He caught a glimpse of Spock's back, with green welts running down it and sharp cuts that ended up in blood. He felt, admittedly, rather proud of himself.

Jim shook his head, "Not at all. But I'd always assumed that it was like, fuck and that's done."

"The reason for the pon farr is the continuation of the Vulcan race." He explained, "The likelihood of an offspring being conceived after several copulations is greater than the likelihood of them being conceived after only one."

"…logical, I guess." Jim chuckled and looked over at Spock… "Now this is gonna sound silly but, just to check… You can't get me… er…"

He shook his head, "No. There are many reasons why not, the least being that you do not have the necessary organs required to carry a child."

"Right, I know, just checking." He went a little pink, feeling silly that he'd even thought of it for a moment. Perhaps he should have kept it to his self. "Ok… so how much longer before you go all um… blood fever-y on me again?" He asked. He winced slightly, moving his hips and turned to where the hypospray with the painkiller was. Thank god for Bones's forethought. He pressed it to his arm and pressed the button, wincing slightly.

"I don't know." Spock said, "Probably twenty minutes. Enough time to get back on the ship and set the orders for a new course." He said. He looked out the window to the tatters of Jim's shirt outside. "I'll get you a new shirt." He said quietly and walked quickly away.

For the first time he had the chance to look around Spock's house, or at least, his father's house. They were in a room he would describe as a living room, with marble (or some other ornate stone) floor. There were large glass doors that lead out down to the area they had been in earlier.

There was a mirror and he walked up to it, stretching his head to expose his neck. Spock had left a lot of marks, the largest and darkest of which being the one Spock had left last of all, when he had finally submit. He touched it and winced. Good thing he hadn't bitten hard enough to draw blood at least.

Spock returned with a shirt, "We're different sizes, but this should fit you." He handed Kirk a plain black shirt.

"Thanks," He took it, then chuckled to himself.

Spock quirked his eyebrow, "What is so amusing?"

"Nothing." He pulled on the shirt, "Just this trope about… girlfriends wearing their boyfriend's shirts… it's a terran thing, you wouldn't get it."

He tilted his head, observing Jim. "Apparently not." He said, and sharply turned away to clean up.

"We have to get back to the enterprise soon." He said, taking out his communicator. Spock nodded. "Kirk to Enterprise." He said, standing up straight and trying to put on his most proper captain's voice.

"Uhura, speaking."

"Tell the transporter room, two to beam up from these coordinates."

"Yes, captain,"

"Kirk out." He closed the communicator and turned to Spock.

"What are we going to tell the others?" he asked, snaking his arms around Spock's waist.

He didn't protest, looking back at him, "Starfleet allows relationships between staff." He said, "I do not see any merit in lying."

"What about Uhura?" He asked, resting his chin on Spock's shoulder.

"We have not been together for some time."

"I know."

"So what relevance does she have?"

He sighed, "I'll explain it later." He said, stepping away as they were engulfed by the golden glow, transported back to the ship.

Kirk turned to the ensign in the transport room, "At ease, ensign." He said, waving him out of the room. He ensign nodded politely and left.

"Right, I'm going to go back to the bridge, set the new course. You go back to your room." He kissed him, "I'll be back there soon, within the 20 minutes." He chuckled.

"Captain, If you are concerned with people finding out about our relationship, then are you sure you should go to the bridge, with my marks on your neck and wearing my shirt?"

For a brief second, Jim could have sworn that he saw a possessive look in Spock's eyes. "Alright," He said, "You go brief the crew and I'll go wait in your room. It will be good for them to get a good look at you acting normally after what happened. Well… as normal as a Vulcan can get. I need to clean up anyway." He shifted uncomfortably. He hadn't really bothered to clean up any of the cum, which was mostly on him.

Spock ignored the insult. "Fine." He said, "I suggest that you do not wear clothes in my room, or they will just end up ripped again."

Jim snorted, "Coming from anyone else, that would probably sound dirty. But with you it just seems like… advice."

He saw a very un-Spock like smirk creep across his face, "Perhaps it was both." Jim put it down to the effects of the pon farr.

He grabbed Spock and kissed him again, "Let's go." He said, walking towards the door. Spock strode slightly ahead of him, and as they parted ways he quickly groped Spock's ass, giving it a quick squeeze, which made him start and stand up stock straight.

Jim grinned. There wasn't anyone better to be married to, in his books.

Thank you for reading!