A/N: I know it's been a while, but I've had beta problems and real life stuff, along with family drama. It's just been a mess. I did get a little time to write, and this is the result. I have to thank Rachael for the awesome beta work you did for me - I really appreciate it, sweetie!
News on campus tended to travel fairly fast, so when Danny burst into the coffee shop and watched Stiles for a long minute on Monday afternoon, Stiles knew the news had gotten around.
The party at the Hales' had been on Saturday, and Stiles was kind of surprised it had taken all the way until Monday to get around campus. Stiles finished filling a customer's order and waited until putting the money in the cash register before looking at Danny. "Yes?" he asked him.
"Is it true? You made a bet with Derek Hale?"
Stiles shrugged, sitting down on the stool that was behind the cash register, with Danny just standing there and watching him. A few moments passed before Danny said, "That's all I'm getting? Just a shoulder shrug?"
"Derek's the one who made the bet. He bet I couldn't fuck anyone monogamously for six months without falling in love with them, but I know I can. If you ask me, he was being pretty foolish."
"Did you even think about how bad of an idea this is, Stiles? How badly this is going to turn out? Derek is pack."
Stiles nodded, "I know he is, but nothing is going to happen. We'll do the bet, go the six months, and I'll prove to him I can do it. I'm not worried."
"Yeah, well I am. I don't really care who wins – I'm just worried this is going to ruin pack relations really badly. If it does, Talia will kill you both."
Danny wasn't a werewolf, but when Jackson got turned into one when they were in high school, Talia had welcomed both Jackson and Danny into the pack. It was the year after Scott and Stiles had joined the pack, as a matter of fact. While Stiles had never been Jackson's biggest fan, and vice versa, that's when Stiles and Danny started getting close.
"Things are going to be fine, Danny, don't worry," Stiles said. He tended to a customer that came to the counter, filling his coffee and taking the money, putting it in the cash register. After he left, Stiles looked at Danny, "Did you ask Isaac out?"
Danny nodded, "Yeah. We're going out next weekend."
"Good for you," Stiles said. It wasn't that Stiles was against all love; he was just convinced that there was no true love for him. But if anyone else could find it, then he was happy for them.
"I still think you're making a terrible decision," Danny said after a moment of silence. "I mean, what do you even get if you win?"
"His Camaro," Stiles said, a twinkle in his eye. "Believe me, Danny boy, that car will be mine." Danny's eyes widened at that, but Stiles didn't question it. "It's fine, Danny. There's nothing to worry about; things are going to back to normal very soon."
-x-
Things were definitely not going back to normal, Stiles decided later that evening, lying in bed, Derek hovering over him. Derek captured his mouth in a kiss, and as their tongues danced together, Stiles felt like he was in heaven.
It'd only been two days since the bet started, and Stiles was really enjoying his sexy times with Derek. While Derek looked and acting like the shy virgin, he was anything but. He may not have been experienced, not like Stiles was, but he knew what he was doing all the same. Derek had already licked and fingered Stiles open, and right now, Derek was kissing him hungrily, and Stiles could taste himself on Derek's tongue. Nobody had ever gone from rimming him to making out with him before, and Stiles had always thought he'd hate it, but he actually liked the fact that he could taste himself on Derek's tongue. It turned him on like he couldn't believe.
"C'mon, Derek," Stiles said, moving so Derek could lie on his back. "I wanna ride you."
Derek nodding, lying down, and Stiles slicked up Derek's cock before easing down on it slowly. He groaned at the way that Derek filled him, and when Derek bottomed out, his hips flush against Stiles' ass, Stiles paused for a moment, giving himself time to adjust. After a moment, he started gliding up and down Derek's cock. It just felt so good; Stiles had never felt so goddamned full before, and he fucking loved it.
Stiles leaned forward and captured Derek's lips in a kiss. He loved the way that Derek felt and tasted, and could do this all day, if Derek let him. As he rode Derek's cock in earnest, he groaned low and then started to talk.
"God, Derek, you feel so good inside of me," Stiles panted. "So fucking good. You make me feel fucking amazing." He groaned as Derek brushed over his prostate, and then said, "Do I feel good to you, too?"
"You feel fucking incredible, Stiles," Derek groaned out. "You're so hot and tight, and fuck, it's so fucking good."
It surprised Derek at first because he didn't usually talk during sex, but something about being with Stiles was bringing it out in him. Stiles sped up a little, riding Derek a little more roughly, and started stroking himself in rhythm of the way he was bouncing in Derek's lap. He was getting closer and closer to the edge, it was so fucking close…
"Please tell me you're close," Derek groaned out, it sounding more like a plea than anything.
"So fucking close," Stiles moaned out. "Just a little bit more, Derek, please."
With the whine so apparent in his voice, Derek planted his feet on the bed and started thrusting his hips upward, and Stiles practically sobbed in relief when he spilled over his hand, striping Derek's chest with white. Derek wasn't that far behind him, spilling inside of him.
Stiles let out a shaky breath, taking a moment to just catch his breath. There was a sheen of sweat covering both their bodies and Stiles felt sticky and just well-fucked. It was phenomenal.
He climbed off of Derek, grabbing a few tissues out of the box he kept on his nightstand and wiped the come off of Derek's chest. He lay down beside Derek and said, "I need a fucking nap, dude. That was just incredible, but I'm all worn out. You're welcome to join me, if you promise not to cuddle me. I don't cuddle; that's a couple's thing."
Derek nodded. "I need to go anyway," he said, getting up and gathering his clothes that were strewn all over the floor. "Cora's having problems with Chemistry this semester, and I told her I'd help her study."
"Harris is such a dick," Stiles said. "I had to deal with him last semester."
"He's always hated you more than the rest of us," Derek said. "What did you do to him?"
"I didn't do shit to him," Stiles said, yawning. "He's just sore because he was a suspect in a crime several years ago. Like that was my fault."
Derek just shrugged.
Once Derek was all dressed, he looked over at Stiles, who was spread out on the bed and fast asleep. Derek went over and covered Stiles with a sheet that was on his bed and gave him one more look before leaving and going home.
-x-
When Derek walked into the house he shared with his sisters and cousin that afternoon, Malia, Kira, Laura and Cora's heads all popped up to see who just came through the front door. It reminded Derek of the merekats in those Animal Planet documentaries that Malia liked to watch.
"How was Stiles this afternoon?" Cora asked, and Derek stopped in his tracks. He noticed Malia and Laura giving him a look, though.
"How'd you know?" Derek asked.
"Other than the fact that you reek of him?" Cora asked, but Derek could tell it was a hypothetical question. "It's all around campus, Der. Everyone knows about the bet."
"Please tell me they're wrong," Laura said as Derek removed his jacket and hung it in the coat closet. "You wouldn't actually make a bet like that with Stiles…would you?"
Derek sighed, "Fine. Yes, I made the bet with Stiles. I bet him he couldn't fuck anyone monogamously for six months without falling in love with them. But I'm in no danger of losing, okay? I just want to prove to him that anyone can fall in love, given the right amount of time. Not even Stiles Stilinski is immune to feelings, okay?"
"Oh, Derek," Laura said, and Derek despised the sound of her voice, like she was feeling sorry for him. "Everyone with a working werewolf nose knows how you feel about Stiles. Why'd it have to be him?"
"Because," Derek said, slightly irritated with the degree, "how was I going to know whether or not he was going to stick to it? I'm not gonna fall in love with the guy. I just wanted to prove a point."
"Of course you're not going to fall in love with him," Malia said, watching him closely, "because you're already there. Derek, you're so in love with Stiles that it isn't even funny. Why are you doing this to yourself?
"Because things are going to be fine," Derek said. "He'll fall in love with me and things will be fine. I'm not losing this one, okay?"
He saw the looks of pity he was getting from both Kira and Laura, and finally said, "And quit that."
"What?" Kira asked, as if she knew he was addressing her. "I didn't do anything."
"Both you and Laura are looking at me like you're pitying me. I fucking hate pity, okay? Don't fucking look at me like that."
Knowing that her brother wasn't going to last much longer without snapping at someone else, Cora got up and said, "C'mon, big brother, let's go to my room. I really need your help with Chem."
Trying to ignore the looks he was getting from Laura, Derek did as Cora asked.
-x-
"So," Scott said later that night, while they were waiting for the pizza they ordered to be delivered, "You and Derek. Never thought I'd see that one coming."
"We're not dating," Stiles said defensively. "We're just fucking. He proposed the bet and I took it. It's going to be the easiest bet I've ever won."
"Have you wondered if maybe he has feelings for you, dude?" Scott asked Stiles. "I mean, why else propose a bet like this to begin with?"
"Because he thinks he's better than me, and he's going to get one up on me. It's not happening, dude. Besides, he didn't exactly propose the bet."
"What do you mean?"
The pizza guy finally showed up and Scott handed the guy some cash and took their pizza and bag of bread, and as Scott put it on the coffee table, Stiles went into the kitchen to pull out some plates for them. When he came back with the plates and a couple of cans of soda, he handed one of each to Scott and then said, "He didn't propose it. When he said it, I think it was more a hypothetical thing. You know, like he was saying it like he didn't expect me to take it."
"So why did you?"
"Because I live for proving assholes like Derek Hale wrong. God, Scott, you know how he is. He thinks he's better than me. And when he was saying shit about how I sleep with everyone, it was like he was judging me. I can totally go six months fucking just him and not fall in love with him. It's not going to be difficult at all."
Scott still looked a little apprehensive. "I dunno, dude," he said, taking a bite of his pizza. He chewed over his thoughts carefully before saying, "I just worry about you – you know that. I don't want you to get your heart broken."
Stiles looked at him like he couldn't believe the words that just left his best friend's mouth. After a few moments, Scott realized that Stiles was watching him, and then said, "What?"
"What makes you think I'm gonna get my heart broken?" Stiles asked. "I've been having sex since I was sixteen years old, Scotty, and I haven't had a single relationship since I was eighteen. That's two years of just sleeping around, and I haven't fallen in love with anyone yet, have I? Because I know when to step back. Fuck buddies are just that – fuck buddies. You don't hang out with them, you don't share meals with them – you just fuck."
"That makes it even worse, don't you think, Stiles?" Scott asked as Stiles took a bite of his own pizza. "What happens if you break Derek's heart?"
"I'm not going to break his heart," Stiles said. "He went into this bet knowing damn well that I'm not going to fall in love with him. It's not happening, okay? Now quit asking me stupid questions and hand me the remote. I wanna watch Daredevil."
Scott rolled his eyes, but handed Stiles the TV remote anyway, and they stopped talking so they could get lost in their TV adventures. A couple of minutes in, Stiles looked at Scott, who was just watching him, and rolled his eyes. It was just a fuck buddy relationship, couldn't Scott see that? Stiles had this bet in the bag; he totally wasn't going to fall in love with Derek.