A/N: I don't know where I come up with these ideas sometimes, seriously... one day, the idea of a vampire AU/ Morgan & Reid romance came into my head, and it wouldn't leave me alone, so here it is! Just something completely random, but I like it! I hope you do too! Oh, and this is a twoshot, so there is another part to come! So, read on and enjoy!

Warnings: Supernatural themes, mentions of blood, Reid/Morgan slash.

Disclaimer: I do not own Criminal Minds or any of its characters.

Bloodlust

Part One

He found Reid out on the balcony, in the cold night air. He was wearing his usual slacks, and his shirt with the sleeves rolled up to his elbows. Nothing else. He didn't know how Reid could stand it, this icy cold weather. He himself was wearing more layers than he ever had before.

"I don't know how you can handle this cold, pretty boy," Morgan commented, leaning against the doorframe.

"I don't feel the cold," Reid replied, not turning around, staring out into the darkness. "The temperature feels perfectly fine to me. Not cold, not hot. Just in the middle."

"How is that even possible?" Morgan asked. Reid remained silent, unmoving. That wasn't like him. Normally, that wasn't like him at all. Morgan came up behind him, wrapping his arms around Reid's slim waist. Still, he didn't move. "Spencer, what's going on?" He kissed Reid's slender neck. "You know I love you, right?"

"You probably won't after tonight," Reid finally replied, in a voice barely above a whisper. "I'm almost sure of it."

"What on earth would make you say that?" Morgan said. "Spencer, nothing could make me stop loving you."

"Don't. Please, don't say that," Reid pleaded, pushing Morgan's arms away and walking back into the room behind them. "Please don't make a promise you can't keep."

Morgan followed Reid into the room, worried but also with his curiosity piqued. Despite how worried Reid had been about Morgan leaving him early on in their relationship, he'd thought Reid had gotten past that. Reid had told him he was past that. Something had to be very, very wrong.

"Spencer, please," Morgan whispered softly. "Please, tell me what's going on?"

"I'm going to, Derek," Reid assured him. "But if you are going to leave after what I tell you, I need you to promise that you'll leave straight away. Leave straight away, and don't look back."

"Spence, I-"

"Promise me, Derek," Reid insisted.

"Okay," Morgan sighed. "I promise. But please, Spencer. Tell me what's going on."

"I've been lying to you," said Reid. "I've been lying to you all this time."

Morgan's heart almost stopped. Reid… Reid had been lying to him? All this time, for the whole year they had been together? About what?

"Why?" was all Morgan could say.

"I didn't have a choice," said Reid. "Tell you too early, and you would've run for the hills. I… I had to be sure. Even now I'm still not sure. But I couldn't hide this from you anymore."

"Spencer Reid, for God's sake, stop beating around the bush!" Morgan exclaimed. "Just tell me what's going on!"

"There's more out there than you ever imagined, Derek," Reid whispered. "So much more." Morgan started to speak, but Reid held up a hand to silence him. "Don't freak out. Leave if you can't handle it, but please don't freak out." When Morgan nodded, Reid opened his mouth, and his canines extended in an instant. So long, so sharp… Morgan was almost mesmerised by them.

"Spencer…"

"I'm a vampire," said Reid, because he knew the word was hovering on the edge of Morgan's mind, the stunned man not wanting it to spring forward. "Don't even try to deny it. It's true." Within less than a second, Reid was on the other side of the room. Morgan gaped at him, dumbstruck. Reid's teeth- his fangs- were still extended, his eyes never leaving Morgan's face. "Say something, Derek. Do something. Anything. Please."

"How long?" Morgan whispered, because he didn't trust himself to say anything else.

"Since the day I met Gideon," Reid replied, and comprehension dawned in Morgan's eyes. "Yes, Derek. He's the one that turned me."

"So the reason you don't look any older than twenty-one is-"

"Because technically, I'm not any older than twenty-one," Reid finished. "I've been twenty-one for the past thirteen years."

"Does anyone else know? About you or Gideon?" Morgan asked. Reid shook his head. "Then why are you telling me this? Why now?"

"Because I love you, Derek," Reid replied simply. "You may think a vampire cannot feel emotion, but we can. We may seem like we don't sometimes, but we actually feel it stronger than anyone else. And you- I've never felt this way before, now or when I was human. And to tell you the truth, I was scared."

"You were scared?" Morgan repeated, confused. "About what?"

"That you would leave me. That you would run out of my life, and never come back," said Reid. "The thought absolutely terrifies me."

"Then I guess you don't have to worry," Morgan declared. He slowly, purposefully, crossed the room and took Reid's hand. Reid just stared at him, not daring to move. Morgan leaned forwards and pressed his lips gently against Reid's. "I'm not going anywhere."

As soon as Morgan had finished speaking, he was in Reid's arms. He'd never expected this; it was always the other way around, Morgan carrying Reid. But then again, Morgan could never have guessed what Reid really was. And his vampire strength made it possible for him to lift anything.

"What do you say, Derek? Do you want me to show you how good I really am in bed?" Reid whispered seductively in his ear.

"Please," said Morgan eagerly. "Show me, baby."

Reid growled, a low, animalistic sound that almost scared Morgan. "It just means that I want you, Derek. Let me show you just how much."

"Wow," was all Morgan could get out of his mouth, hours later. "Wow." His breathing was heavy, coming out in rugged gasps. He was in pain, but it was a good kind of pain. An amazing kind of pain. He'd never, ever, felt anything like this before. Never done anything like that before. The things that Reid could do in the bedroom… they were things that Morgan could never have imagined. "You… you've been holding out on me, pretty boy."

"I had to, Derek," said Reid. He was lying beside Morgan in the bed, facing him, gently stroking Morgan's bare arm with his fingers. "I could've hurt you, if I'd been too strong, too rough. And you would've asked questions I couldn't have answered."

"You were amazing before," said Morgan. "But now… now, you're mind blowing. And the fact that I had sex with you before, when you were holding back… it makes this so much better." He splayed his hand on Reid's bare chest.

"I'm still holding back," Reid admitted. "I can… I can do more with you now that you know. I can be rougher with you. But I'm still too strong for you. If I use my full strength, I could seriously hurt you. I could kill you."

Morgan didn't reply to this; instead he was silent, thoughtful, an idea forming in his mind. After a few more moments, just lying next to Reid, he said, "Spencer, can I ask you a question?" Reid nodded. "Your intelligence, your memory, is that because you're a vampire, or-"

"No, I was always a genius, and I always had an eidetic memory," Reid replied. "Being a vampire just amplifies that. My intelligence is the main reason Gideon turned me in the first place."

"Did you have a choice?" Morgan asked before he could stop himself. "Did you choose to become a vampire?"

Reid shook his head. "I wouldn't say I was against it. But Gideon didn't ask me whether or not I wanted to become a vampire, nor did I ask him. He turned me before I had a chance to say no."

"And how… how did he turn you? I mean, you don't have to tell me if you don't want to," he added quickly, suddenly scared of how Reid would react. He didn't know whether that was the type of this you asked a vampire.

"It's okay, Derek," Reid whispered soothingly. As Morgan listened to his voice, really listened, he realised how mesmerising it truly was. How intoxicating. "I made a promise to myself that if you accepted me for what I truly am, I would tell you anything you wanted to know." He squeezed Morgan's hand reassuringly before he continued. "First, he bit me, on my neck. Long, hard. Painful. I remember thrashing about; he had to pin me down. From what he told me, that always happens- even when one chooses to become like me. He drank my blood. He just drank, and drank, and drank. I fell unconscious before he was finished; he had to drink everything inside of me. He buried me in the ground, and I was in there all day. Technically, I was dead. Technically, I still am. Then the next night, I dug my way out. I began my new life."

"So you drink blood to survive?" Morgan asked. Reid inclined his head the smallest of amounts. "Do you… have you ever killed anyone?"

"I did at first," Reid admitted. "Young, newborn vampires have little self-control, especially when their maker- the one that changed them- doesn't try to control them. Doesn't teach them to drink without killing. But now I never, ever, ever kill, even when the urge comes over me. I just couldn't do it. Not now."

"So if you're a vampire, how can you walk in the sunlight?"

Reid laughed, as if that was the most obvious thing in the world. "It doesn't actually kill us, being in the sunlight," he said. "You watch all the movies, they all say it'll kill us the minute it touches our skin. They're wrong. It burns us, yes; cracks our skin, weakens us, but only kills us if we stay in it for too long. The time varies for everyone. But still, the vast majority of us sleep during the day, because depending on the strength of the sun we may become too weak. And it's so much harder for us to stay awake during the day, in the same way it's harder for a human to stay awake at night."

"But you're a special case, aren't you?" Morgan realised.

Reid nodded. "Very, very few vampires actually know this, but if the first one you drink from after you awake anew is your maker, you become a Daywalker. The sunlight doesn't hurt me, doesn't make me tired at all."

"My special vampire," Morgan whispered absently. "Unique even among his own kind." He ran his fingers across Reid's body, only now feeling that strange coldness and electricity dancing across the vampire's skin.

"How… how can you stand to be around the dead bodies? The blood?" Morgan asked, the thought suddenly springing into his mind.

"It… it wasn't easy at first," Reid admitted. "When I was young, all I wanted was to drink. But Gideon taught me how to control myself. The blood of the victims does elicit certain… feelings in me. It always does, and it always will. But I can control myself. If I couldn't, I wouldn't do this job."

"Wow." Morgan was reduced to using that one syllable word again. There was nothing else he could say, anyway. In one single night, Reid had become a completely different person. No, that wasn't right. He was who he always was. Morgan just now knew the truth.

As he realised this, Morgan began to realise something else. His love for Reid… it had changed. It had intensified. He could hardly believe that Reid could be this creature… a creature made to maim and kill and murder, and yet be one that stopped murderers. It would've been too much for most people, and yet Reid carried the heavy burden with grace and skill. In that moment, Morgan knew that Reid's greatest fear wasn't going to come true. He wasn't going anywhere.

"Spencer. Pretty boy," said Morgan. "You… you don't age, yes?" Reid nodded. "And you want to remain with me?"

"Yes. Always," Reid replied. "I love you, Derek Morgan."

"And I love you too, Spencer," Morgan replied instantly. "You want to stay with me for the rest of my life."

"Yes. Vampires don't make that kind of decision lightly. It's one of the most monumental decisions we can make."

Morgan nodded. "But I'm going to die, Reid," he whispered. I'm going to age, I'm going to grow old, and I'm going to die. And you're not."

"I know," Reid sighed. "I know." He stroked Morgan's cheek tenderly, lovingly. "I have to go through all of eternity, immortality, remembering everything about you, always feeling this way, yet never being able to see you ever again. But I can't… I can't think of that right now."

"There is another way," said Morgan. He didn't say anything else, just waiting for Reid to realise what he meant.

"No. No way," Reid hissed. He gracefully got up off the bed, crossing to the other side of the room. Morgan had known Reid would react badly. He'd been prepared for this.

"Why? What would be so bad about eternity with me?" Morgan asked as he sat up on the edge of the bed, letting a tiny bit of hurt creep into his voice.

"Nothing," Reid replied. "In fact, there's nothing I'd want more. But I'm not thinking about me. I'm thinking about you."

"About me?" That, Morgan hadn't been expecting. "What d'you mean?"

"I'd have to drink from you, Derek," said Reid. "I'd have to drain you. And if I go too fast, hurt you while I'm drinking, I- so many things could go wrong. I could kill you. And even if I didn't, the pain… the pain is unimaginable. It will be nothing like you've ever felt before. You will be begging me to end it. Begging me to kill you."

"I don't care," Morgan insisted, but Reid wasn't finished.

"What about your life, Derek?" he said. "You won't be able to work for months, while I teach you self-control. You might be able to work from the office and the precincts, but that would raise too many suspicions. And your family… you'd have to hide this from them forever. You wouldn't be able to tell them, ever. Everything will change for you. I'd… I'd be condemning you to this life, having to drink blood, possibly even killing, to survive. And what if… what if you fall out of love with me? What would you do then?"

"Spencer Reid, you listen to me now," Morgan demanded. "I am never going to stop loving you. You said wanting to stay with someone forever is one of the most monumental decisions a vampire can make. Well, it's the same for me too. I don't care about the pain, or about the having to drink blood part. It's a small price to pay for an eternity with you. And there's nothing I want more than that."

Reid crossed the room and took Morgan's hands, pulling him to his feet. He stood motionless, staring the man he loved in the eye. "Are you sure? Are you absolutely sure?"

Morgan nodded. "Definitely. Do it, Spencer."

"Right now?"

Morgan nodded again, anticipation rising in him. "Right now," he repeated. "Change me, Spencer."

Reid leaned in ever so slowly, brushing his lips gently against Morgan's bare skin. And then he sunk his fangs into Morgan's neck.

Morgan screamed. And screamed, and screamed, and screamed. Reid had been right; the pain was unlike anything he had ever felt before. He was thrashing about, too, like Reid had said. He tried to control his body, but he couldn't. It was Reid's unbelievable strength that was holding him in place. But he would not yell for Reid to kill him. He couldn't do that to him.

He could see and feel the blood leaving his body, feel it running over his skin… Reid's fangs were stuck deep into Morgan's neck, and he was drinking Morgan's blood, taking it into his body. Reid's expression was a mixture of hunger, eagerness, and concentration- like he desperately wanted Morgan's blood, wanted Morgan to be with him forever, but was trying very hard not to drink too fast, so he didn't kill him.

Morgan could feel himself getting weaker and weaker. It wasn't long until he stopped thrashing in Reid's arms, no longer having the strength to fight anymore. He did still have the strength, however, to stare at Reid as he removed his fangs from Morgan's neck. Morgan's blood was dripping from Reid's mouth, and his lips and teeth were coated in crimson red. He looked so much more wild and animalistic than Morgan had ever seen him before. He looked like a vampire.

Despite how close he was to unconsciousness, Morgan still couldn't help but gasp when Reid put his fangs to his own wrist and tore into his skin.

"You have to drink it, baby," Reid whispered soothingly. "You have to drink my blood, or you won't change."

"No…" Morgan managed to gasp out.

"Yes, Derek," said Reid. "It won't hurt me. And trust me, you'll like it. Vampire blood to a human is intoxicating and delicious like nothing else. Now drink, before my wrist heals."

When Morgan nodded, Reid put his bleeding wrist to Morgan's lips. Morgan began drinking weakly, clumsily, slurping up the blood flowing from Reid's wound. Reid had been right- his blood tasted amazing. Like nothing Morgan had ever had before.

Before long, Morgan had found the strength to grip Reid's arm with both hands, holding his wrist to his mouth as he drank like his life depended on it- which, he realised, it actually did. Or his afterlife, anyway.

After he'd decided Morgan had had enough, Reid began to pull his wrist away. Morgan tried to pull him back, but Reid managed to get out of his grasp. "That's enough, baby," he said in a soothing, gentle voice. "I… I need to finish draining you." He gently stroked Morgan's cheek, which was glistening with sweat. Now that he'd stopped drinking, Morgan realised how weak he really felt.

"Do it, Spencer…" he managed to murmur. Reid didn't even hesitate; in less than a second, his fangs were back in Morgan's neck. Morgan knew he wouldn't be able to hold on much longer. He could feel himself getting weaker and weaker, and he could feel the life leaving his body. "I love you, Spencer…" he whispered before his eyes closed and everything faded to black.

A/N: So there you have it! Like I said, just something random that popped into my head, and I had to get it down. Did you like it? I hope so, this was completely random... reviews please, I'd love to here what you think! And remember, this is only part one of a twoshot, so the second half is still to come!

Note from Diamond Cobra: "I received this ages ago. It's my fault it was delayed. Sorry!"