You're Mine

BE WARNED: This story contains both straight AND gay male sex. If either of those isn't your thing, you should probably find another story.

---

"I'm really sorry, Kev! Derek stopped by the office to surprise me with a night out, and I totally spaced on our plans."

Kevin was disappointed, but honestly, he had seen it coming. He and Emily had been best friends ever since they met in freshman year of high school. They bonded quickly over their shared love of cheesy sci-fi shows and point-and-click adventure games, and had been pretty much inseparable from that point on. They had even chosen to go to the same college, and stayed best friends all throughout.

They spent so much time together that all their other friends pretty much assumed they were dating, even though they never did. Kevin did ask her out once, a couple of years into their friendship, only to be rejected.

Not that he minded too much. The sting of rejection hurt but the friendship was too important to him to lose, so he decided to do his best to move past it. And he managed to, mostly. But there were still times, like when she laughed particularly hard at one of his jokes, or when she would hug him just a bit tighter than usual after they hadn't seen each other for a while, that he would feel that attraction pull at him once more.

But over the last few years, they had started to drift apart. There was no big fight or anything, they just started spending less and less time together in the way that people do sometimes as they get older.

Emily's job kept her particularly busy. Her background was in chemistry, and she worked in R&D for a big booze company, trying to come up with the next big trendy alcoholic beverage. Kevin knew that her latest project had to do with creating some kind of compound that would give people more energy or something like that, so they would be able to stay out partying and drinking for longer.

He had heard more than a few of her rants about unsuccessful tests and weird responses from their rat tests, and how she had to spend a ton of sleepless nights at the office trying to perfect the formula. Unbeknownst to Kevin, she had even started taking some of her work home with her, so she could keep fiddling and running tests out of the office.

When she first started working there, Kevin almost swore off drinking entirely when she would tell him about all the weird shit they put in alcohol sometimes. Preservatives made from fish goo, and that kind of thing. But a few free samples and early test bottles put a stop to that quickly.

This is why Kevin was really excited when she wanted to hang out on one of her rare nights off. They made plans to watch a movie on Netflix, the latest in one of their favorite sci-fi series that they were too busy to watch when it was out in theaters. And why he was just as bummed now that she had canceled on him.

Still, Kevin could tell that she did really feel bad about leaving him out in the cold. Plus, he knew how hard a time Emily had had with dating recently, and wanted her to have the best chance she could finding someone good, so he couldn't find it in himself to stay mad at her for long.

"Alright, Em. Don't worry about it," he said "I should be able to make the next train home anyway."

"Train?" Emily asked. "Oh shoot, are you already at my place?"

"I mean we agreed to meet there like half an hour ago so..."

"Crap. You're right, I'm really sorry again. Tell you what. Drink my booze, raid my fridge, just chill for a bit. There's a key under the mat, just chill at my place for a bit before you head back. You can even watch the movie without me. I don't think I'll be back at my place anytime soon."

"So you abandon me and you're the only one of us that gets to have sex tonight?" Kevin said, already unlocking the door with Emily's spare key.

Kevin loved that Emily was comfortable enough with him that she didn't shy away from talking about her sex life. But imagining him longtime best friend and secret crush getting fucked by some confident, muscled-up alpha male hurt just a bit.

That was always Emily's type, and Derek fit that to a tee. Kevin wondered. If he could have just been more like Derek: more confident, more assertive; could he be the one out with Emily tonight? The one who would get to go home with her, to get to have sex with her?

"Hey man, the night is young. Just don't let any randos into my place," she said.

"Fine, but don't expect any of your fancy liquor to be left," Kevin replied.

"Hah, fair enough. Thanks, for being so cool about this, Kev. I owe you one."

"No worries, Em. Have a good night."

Kevin hung up and headed straight for the fridge. Opening it, he found a shelf full of beers he had never seen in his life, each with its own fancy label. Some didn't even have actual labels, just strips of tape written on with marker.

"Oh yeah, it's early access beer time," Kevin said. Emily had let him taste some of these test beers before, even if she wasn't technically allowed to at work. Usually, they weren't that great just yet but he loved being able to say he tried the next big trendy beer before anyone else. But Kevin took a sip bottle labeled "TEST 1" and found it was the best beer he had ever tasted.

He was just going to nurse it while he looked for something to eat, but before he knew it, he had downed the whole bottle. There was just a hint of some kind of spicy flavor that he couldn't get enough of.

"Damn," Kevin said to himself. "Gotta tell Emily that one's a winner."

Having finished his first drink so quickly, Kevin decided to sit down and figure out what he would have for dinner before opening another. Walking over to the couch and TV, he started to feel a bit warm. That was weird, since it was a pretty cold night and Emily generally liked to keep her apartment a bit chilly, but he figured it was just the alcohol.

Settling into Emily's couch, Kevin noticed something on the coffee table that hadn't been there the last time he was over: A picture of Derek and Emily on a hike.

"They've been dating for like a month, and he's already in a framed picture? Guess they're pretty serious," Kevin thought out loud. Then again, he could see why. He was jacked, successful, and a little bit cocky, just like Emily liked. A lot of the time, this ended up with her dating some asshole jock for a few weeks then dumping him when the excitement wore off.

But the one time they had met, Kevin learned Derek was also pretty smart, and seemed to be a genuinely nice guy. He was glad Emily could finally find someone up to her standards, but he couldn't help being just a little jealous.

And he wasn't just jealous of him dating Emily. Even in the little picture, Derek's physique was obvious. He towered over Emily--just like he had over Kevin that first time they met--and his muscles were apparent, with his massive arms straining the fabric of his hiking shirt. The sex he must be able to have with that body. He must just be able to toss her around like nothing.

And though he tried to stop himself from thinking about it, he couldn't help but slide into a fantasy he had more than a few times:

Emily was staring deep into his eyes, her eyes filled not only with love, but with desire for him as well.

"I've wanted you so bad, Kev," she said. "All these years, I've always wished you would just bend me over and fuck me like the horny slut I am."

Kevin felt himself start to get hard. As wrong as it felt to jerk off on his best friend's couch, he was already too horny to stop himself from rubbing his cock through his jeans.

He imagined Emily taking off her shirt, imagined what her breasts would look like. In his fantasy she was completely naked now, with one hand reaching between her legs.

Kevin got even harder. He was sweating now, despite it being a particularly cold night. His head was... so fuzzy. It was getting hard to think. Getting hard to remember where he was, what he was doing. Getting so hard. He knew he had to strip. Had to get naked. Had to jerk off.

Before he knew it, his clothes were off and he was slowly stroking his throbbing cock. It felt so wrong to do this in his best friend's apartment, but he was too horny to care.

And then the fantasy shifted. Emily wasn't looking at him anymore. She was looking at Derek.

Worshiping his body, running her hands all over his massive frame. Making him moan as she licked his nipples. Getting on her knees. Pulling down his shorts. Revealing his massive cock. It must be huge. So big, hard, and imposing. A perfect cock for a perfect body. Sucking his cock, doing her best to take the entire thing down her throat. Derek moaning in pleasure, playing with his own pecs, his own nipples. Using his other hand to force his dick further into Emily's mouth. Then, Derek bending her over. Slowly sliding his dick into her. Fucking her. Faster. Harder.

Kevin was stroking his own cock even faster now. He couldn't believe he was imagining his best friend fucking her boyfriend, while he masturbated on her couch. But he was too lost in his own fantasy: her bent over, nothing but sex on her mind while Derek pumped his big cock in and out of her. Both of them moaning in pleasure as Kevin watched and stroked. He wanted it so bad. Needed it.

And suddenly, Emily stared right at him.

Her eyes weren't the caring eyes of his best friend, or even the lustful stare of the Emily from his usual fantasies. They were red, and glowing, and irresistible.

"See? This is what you could have had. What you still can have. Don't you want it? The power? The confidence? OH FUCK YES!"

The warmth blazed in his head now, his eyes went wide as it started to take over his mind, making it hard to think straight. He could only focus on her eyes, and the pleasure he felt.

"I want... No, what's happening?" he stammered.

"Don't you want me to be yours?" she asked, her voice dripping with sex, trying to draw him further into the warm haze.

"I... want... you..."

"Don't you want to fuck me whenever you want?"

"Fuck you..."

"Don't you want to treat me the way I deserve? Like a slut."

"Slut..."

Kevin was stroking his cock as hard as he ever had before. His arousal continued to build. He felt like his body was on fire, like steam should be coming out of his nostrils with each ragged breath.

Emily continued to stare at him, Derek still fucking her, his pace unrelenting.

"I can be yours. All of this can be yours," she said.

"All... mine..." Kevin repeated, his voice now sounding like a low roar.

"Just give in to it. Give in to the feeling. Let it take over," Emily continued, as she started getting fucked even faster.

"Yes, I can feel it. It's so powerful. I'm so powerful."

"No need to think about other people anymore. Just think about yourself. Do what you want. Take what you want."

"Yes! Fuck yes!" Kevin yelled, precum dripping from his cock, forming a small puddle on the couch below.

"It's all going to be mine!" The feeling consumed him. The power, the confidence, the lust. He stood up. Up to now, he had been stroking his cock out of need, but now he liked it. Hell, he loved it. Loved the feel of his powerful, hard cock in his hand, the jolt of pleasure that came from a tweak to his nipple.

"It's all fucking mine!" Kevin bellowed, as he started to orgasm. And as he started to cum with an animalistic grunt, he looked down and realized that Derek was gone. It was him with his hands on her hips, pulling her towards him, holding her down. His hard, powerful cock deep inside the slut's cunt. His load that was filling her, marking her as his.

Finally, the heat started to subside, but not completely. He could still feel its power in him, changing him. Kevin let out a few deep breaths, basking in the afterglow of his orgasm. Suddenly, Kevin opened his eyes. He was back in Emily's living room, alone. He was naked, though he had no intention of putting his clothes back on. He was standing in front of Emily's couch, his cock still not completely soft.

In front of him were ropes and ropes of cum, which had splattered all over the coffee table, all over the picture of Emily and Derek. And all over the TV behind it all, too. He thought about cleaning it up, but... he didn't want to. And from now on, he would only do what he wanted, when he wanted.

The fantasy he had had of Emily had disappeared, but Kevin wouldn't let it stay a fantasy much longer. He would take her. And anyone else he wanted.

---

Emily had a great night. She finally made some progress at work, and was leaving the lab on time for the first time in what felt like months only to be surprised by Derek, her new boyfriend who she'd been seeing for the last month or so. Things had been going great with them. And after a night of great sex, she gave him a key to her apartment. This wasn't a step she would have taken this soon (or maybe ever) but it just felt right.

But she did feel terrible about forgetting her plans with Kevin, and hoped she could make it up to him some other time. She truly was grateful to him, for being such a constant and reliable friend, and for being so understanding the night before.

Unlocking her apartment door, she decided to call him to apologize again, and hopefully reschedule their plans, which she really was looking forward to. Now that work was starting to let up, she would have a bit more free time.

But as she stepped into her apartment, she realized she wouldn't have to call him. He was already there.

The man in front of her was definitely Kevin, be he looked wildly different. He was more muscular. Not like he'd been working out recently, more like he'd been bodybuilding for years. He seemed taller too, somehow. And his dick... she averted her eyes quickly, but from the glace she got, it seemed to be even bigger that Derek's, which was already one of the biggest she'd seen.

Without a word, he slowly started to step towards her. His eyes set unblinking on her, unabashedly ogling her body.

"Kev... Shit, sorry I thought you would have left. Uh... Why are you naked?"

He said nothing, and continued to walk forward. She started to back away from him.

"Dude, you're really freaking me out. I'll uh... come back in a few minutes and let you get dressed."

She felt herself back into the wall. With Kevin still advancing on her, she started to panic. How could he do this to her? He was her best friend.

Kevin was right in front of her now, towering over her as she squeezed back against the wall as hard as she could.

"Kev... please, whatever you're thinking of doing, just don'-"

She felt Kevin gently lift her chin, making her look straight at him.

"Look into my eyes," he said.

As he finished the sentence, Kevin's eye started to glow a bright red. This scared Emily even more, but she found that she couldn't tear her eyes off of his. They were so bright. So powerful. So dominant.

She could feel the heat radiate from his hypnotic stare and start to fill her mind, making her start to feel more relaxed. More submissive. Obedient. The heat started to creep down her body as well, sending tingles down her shoulders, her spine. Reaching her tits, making her nipples harden. Down through her stomach making her feel empty, and in need of filling. And even further to her pussy, which started to tingle despite her fear.

"You're mine," he said. He didn't raise his voice, but the words echoed in her mind like he had yelled right in her ear.

"Kev, what the fuck are you talking about? What the fuck did you do in here last night?" She was angry that Kevin would do this, and she was scared of him. Terrified of the one man in the world that--up until this very moment--she felt completely safe with. But even with the anger and fear, deep down something primal in her accepted his words as the truth, even if she didn't know it yet.

"Strip," he said sternly.

Instantly, her hands moved to obey his command, without her brain telling them to. She wasn't in control anymore. He was.

"What... I didn't... Kevin, why did I take off my clothes? You really need to leave. Please."

"You took off your clothes," Kevin said, completely ignoring her pleas. "Because you're a slut."

His eyes started to glow even brighter at the word slut.

"No... What are you doing to me? Please, don't." She said, her voice starting to falter.

"Quiet, slut." Kevin said. At the word slut, a rush of pleasure ran through her pussy, and she could feel herself get even wetter. She was a slut. He said so. "Just look into my eyes. And obey."

"No... I..." She tried to resist, but her mind started to crumble. "Look into your eyes. And obey. Yes... Master."

"Good girl," Kevin said, stepping closer to her. "Now, on your knees."

As Emily did as she was commanded, her stare went from Kevin's eyes to his hard, throbbing, leaking cock. Just as powerful as Kevin's eyes, it radiated the same heat that now filled her body.

"What are you?" Kevin asked.

"I'm a slut, master." Emily replied, her voice thick with arousal. "I'm your submissive, obedient slut."

"Good girl. Keep going." Kevin started to stroke his cock, turning Emily on even more.

"I'm a mindless slut, master. I can't think. I can only do as I am told." Emily started to play with herself as well, one hand drifting between her legs and the other starting to play with her nipples. "I live to serve my master. I live to suck your cock. I live to get fucked by you whenever you want."

She went on, feverishly playing with her pussy even faster, as the heat changed her completely, blanking out her mind and filling every cell with lust. Then, Kevin picked her up like she weighed next to nothing. He carried her so their foreheads were touching, and he was looking into her eyes again. She felt the tip of his cock rubbing against her cunt.

"You're mine," he said, and thrust his cock all the way into her. With a scream, she came. And she knew he was right.

"I'm yours, master! Use me like a good slut!" Emily cried as Kevin fucked her relentlessly, burying his big, powerful cock in her dripping pussy to the hilt with every trust, lifting her entire body up and down as he hammered her pussy. The heat controlled her now. Master controlled her now.

With barely any effort, Kevin lifted his slut completely off his dick. Instantly, she yearned for him to fill her again. Thankfully she only had to wait a few seconds as Kevin forced her down to her hands and knees, pushed her face down to the floor, and started fucking her once again.

Kevin felt pure power, pure lust flowing through his veins. His cock throbbed, harder than it ever had been, and bigger than it was before. He could feel it growing with each thrust, filling his slave even more. Judging by her moans she could feel it too. And he knew that he could do this to anyone he wanted. The thought pushed him closer to orgasm.

"It's time to take my cum, slut," he said.

"Yes master, please! Make me yours completely!" Emily screamed back. Her eyes had glazed over, and she was completely lost in the pleasure that submission brought. "I need it, master, my pussy needs to be filled! Your slut needs to take your load!"

With a deep yell, Kevin came. He shot even more cum than he had the night before--the evidence of which was still all over the living room--into Emily's eager pussy. Pulling out of her, Kevin marveled at the amount of cum that leaked out of her hole.

Kevin stood, but Emily remained on the ground in a daze, one cheek still pressed against the floor. She had had the strongest orgasm of her life, feeling Kevin's powerful cock twitch and throb as it filled her with his load. But despite this, she continued to lazily play with her clit as all the cum her cunt couldn't hold leaked out of her and onto the floor.