Part One:

The TARDIS was here.

Sensors bleeped all over Torchwood. Lights flashed, sirens wailed. Ianto's fingers scurried across equipment, pressing buttons. Gwen had activated Torchwood security systems. Tosh monitored the commotion, trying to figure out what the cause of the alarm was. Owen strapped on a gun.

Jack grinned widely in recognition and didn't hesitate. He ran.

Out of the Hub, past buildings, through alleyways, and across roadways, Jack ran. He had to get there before the TARDIS left again. Just when the breaths started to come harshly into his lungs and his legs started to get used to the normal strain, he heard the familiar whirring gasp.

Finally! He rounded a corner in an alley and there it was. That marvelous blue box. It stood innocently in the center of a dead end, the sign quietly proclaiming "POLICE BOX". He almost jumped for joy.

"Doctor!" Jack shouted gleefully.

He waited for a second outside the blue doors before deciding he'd just make himself at home. Jack threw open the blue doors, bounding into the oh-so-familiar console room… and was promptly attacked by a feverish body.

"Doctor? Uhmph!" His lips were being ravaged. This was interesting. Unexpectedly he was being voraciously snogged... By the Doctor. Oh, and it felt so good. Jack found himself kissing back passionately. Was this a dream? He had fantasized about the Doctor so many times it was almost pathetic, and here he was. His back was pressed into the TARDIS doors and the Doctor's hands were roughly running up and down his chest. A hard length was pressed into his hip bone.

The Doctor grunted into his mouth and Jack moaned. This was hotter than he'd ever imagined. Hands went for his belt yanking and tearing at it, but failing at loosening it. Jack's pants were getting tighter and tighter.

Suddenly, his mouth was free and he was left panting against the doors. Taking a moment to gather himself, Jack stumbled deeper into the TARDIS and peeled his eyes open to see the preoccupied Doctor half ripping his own trousers off, the material getting caught around his ankles. His overcoat was already pooled on the floor.

Jack groaned as his eyes swept over the Timelord's nearly naked body. The Doctor looked up at the sound and it was then that Jack noticed his blown pupils. Something wasn't right. Was the Doctor drugged?

Oh, it didn't matter anymore, because his mouth was being devoured again, hot breath hitting his face in a way that should not be so arousing. He was thrown backwards into a wall now, the Doctor landing on him again, tearing his shirt open, ripping off buttons, and rolling his hips hard against Jack. Jack couldn't help but thrust back in return, scrabbling for more friction.

Wait. This wasn't right. He was letting a crazed Doctor basically fuck him against a wall. Trying not to think that this seemed to be a really good idea, Jack struggled with his own urges and pushed the fevered body off of him.

"No, no, please, Jack!" The Doctor flailed and writhed against him, and oh-god-the-friction… But no, he couldn't right now.

"Doctor, stop. You're not like this; you're not yourself right now." Jack tried to steady his shaking voice. He must be crazy to stop the Doctor now.

"Please, Jack, let me… ugh, Jack!" The Doctor whined lowly and ground his hips in the air fruitlessly.

Jack reluctantly held him back and tried to button the Doctor's trousers back up, trying not to think how close his hands were to the Doctor's very hard, very obvious erection. He couldn't take advantage of his friend like this, no matter how easy or good it might be. It would be an amazing night, but the Doctor would never be the same to him again. He couldn't alienate someone so important… could he?

The Timelord panted and pushed forward. "Please… please." He let go of Jack, slumping over, trembling and shaking. Jack was alarmed to hear him breathe out harshly and slowly, trying to regain what little control he had. He finally gasped out, "aph-aphro… disiac… in me… have to… have to…. or gon-gonna die."

Jack's eyes widened. Aphrodisiacs were serious business. At this point, the Doctor really could die if he didn't get some form of release.

The Doctor fell to the floor and spasmed. "Please, Jack, I'm sorry. I'm so sorry." He almost sobbed against Jack's shoe brokenly. "Help me, Jack?"

His friend was never going to forgive him for this, but he couldn't ignore the Doctor's intense begging anymore.

Jack bent down and kissed him softly, the suddenly hopeful Doctor latching on like a drowning man. "Ugh, Jack, have to… oh, please… have to come. Hurts."

"Shh…. Doctor, I'll help you. I promise. You have to let me help you."

Jack received a groan in response and he undid the buttons on his own trousers, pulling them off quickly. The Doctor pulled him onto the TARDIS floor and shuffled out of his own pants frantically. Jack rolled on top of him and thrust his hips into the Doctor's. The Timelord wailed and clutched at Jack's back.

"More, more, faster, Jack." The Doctor gasped against his cheek, grinding his barely clothed erection into Jack's.

Jack reached into the Doctor's underwear, pulling out the rock hard, dripping length. The Timelord writhed again, thrusting into his hand and keening.

"Doctor, it's okay. I'm helping." Jack tried to keep his voice soothing, but when you have a sex-crazed man underneath you; it's difficult to concentrate on anything other than hottightpleasefriction.

Jack wriggled until his own underwear was off and then brought his erection to the Doctor's aching need. They touched and rubbed and the Doctor threw his head back into the floor, bucking his hips and sobbing in relief.

"Almost, Jack, almost, please, please, please."

Jack grunted in pleasure, rocking against the Doctor. This wasn't going to take long. It would have been embarrassing, except that fantasies had nothing on the real Doctor and he really couldn't blame himself. This was well past simply hot. And anyway, the Doctor was definitely beyond caring about anything.

Jack almost screamed when he felt teeth clamp onto his neck. He let his hand slide between them and grasp them both, stroking fast and hard.

"Jack! Almost! I need… Please… Let me… ugh!"

The Doctor jerked convulsively and he twitched in Jack's hand. Hot liquid spilled over his fingers.

Jack kept stroking his own cock, body bowing over the Doctor before going still, his own release shaking him fast and hard.

Jack rolled over to avoid crushing the man beneath him, panting against the floor. He heard a few sharp gasps from the Doctor, and then felt him lay still.

"Doctor?" Jack worriedly turned over after a second of catching his breath.

There was no answer, but Jack could see the exhausted Timelord sprawled across the entryway to the TARDIS, half-clothed, with drying stains on the front of his shirt tails.

His eyes were closed and he looked like he had fallen into a blissful sleep, but just to be sure, Jack leaned down, pressing his ear against the Doctor's chest. Swift quadruple thumps beat loudly, and Jack relaxed, slumping down next to him.

Jack sighed heavily. This was going to need some serious explaining when they woke up, but for now, he was tired. He closed his eyes, curling himself against the Doctor and ignoring the hard TARDIS ground beneath them.

A/N: Hope you enjoyed. My first fic I've attempted that's rated over a PG-13, so I'm a little nervous. I have the next part done; I'm just editing, so more coming soon! Hopefully I'll improve as I go. :-D

Please review!