A/N: I know it's been a while, but I had a few things come up, and had to take care of them so I couldn't write. When things finally died down a little I was able to get some writing done. I hope everyone enjoys the chapter.

Ever since that day in Stiles' bedroom, things between him and Derek were starting to change. Stiles wasn't stupid; he noticed it, but was trying his best to avoid it. He practically lived in denial about it until Scott brought it up one day, a couple of days before they were to leave for Christmas break.

"What's wrong with you lately, dude?" Scott asked, coming into Stiles' bedroom as he was packing a duffel bag of stuff to take to his dad's. "You've been acting really weird."

Stiles shrugged, "Nothing, why?" He figured that feigning ignorance was the best way to go here, since he actually wasn't one hundred percent sure what was going on himself.

"You've been acting strange lately," Scott said, taking a seat on Stiles' bed, watching his friend closely. "I've noticed it, and I know a bunch of other people have, too. Allison even asked me if something was wrong with you." Scott sighed before saying, "You know, if something's wrong, you can always come to me with it. You're my brother, dude, and I hate seeing you upset."

"I'm not upset," Stiles denied, putting his duffel bag in the corner of the room. When he looked back at Scott, he sighed. "Okay, so the weirdest thing happened a couple of weeks ago. Derek came over on the anniversary of my mom's death. We didn't have sex, but he gave me a massage. This is a fuck buddy relationship and that's it, so why the hell is he coming over here and checking up on me?"

"Maybe he likes you," Scott said. When Stiles started to protest, Scott shook his head, "I don't mean it the way you think I do. I mean, maybe he likes you as a person and wants to be your friend."

Stiles shrugged, "I don't know, dude, but I just have to keep on ignoring it. It'll go away eventually."

Scott just gave his friend a look that said he didn't believe a word he was saying.

-x-

"How do you feel about bondage?"

When Stiles had called and asked Derek to come over, this wasn't what he was expecting. In fact, the question seemed to come out of nowhere. Derek just watched Stiles for a good minute, letting the words sink in. Then he looked at Stiles, "What do you mean?"

"Bondage. You know, tie me up and have your way with me."

Derek shifted nervously and then said, almost awkwardly, "I didn't know you were into that."

Stiles just shrugged, "What can I say? I'm a kinky bastard. But I have a pair of handcuffs and every now and again I liked to be held down during sex. But we don't have to if you don't want to - I want you to know, Derek, that I would never do anything you were uncomfortable with."

Derek's eyes shifted around the room, so Stiles laid a hand of his forearm, "Are you okay? What's wrong, big guy?"

"I'm just not comfortable with holding someone down like that," Derek said nervously, like he was afraid that Stiles was going to reject him or be angry because of this. "If we're going to do bondage of any kind, I'd rather be the one held down."

Stiles nodded, his eyes widening in surprise. He was definitely not expecting that, but he could roll with it."Okay, sure. I have no problem with that. So here's what I'm thinking. We've got a few feet of wolfsbane rope in the closet - not too much wolfsbane that'll make you sick or anything, just enough to keep you a little weak. Give you human-like strength. Would it be okay if I tied you up?"

Derek was silent.

"I can't do this with just everyone, so I understand if you don't want to, Der. I need to know that I can trust the person wholeheartedly and I haven't slept with a lot of people that I could do that with. But you're pack, and if you really wanted to hurt me, you've had more than enough chances to do so. I know we don't always get along, and I don't always like you, and you don't always like me, but I trust you. I would hope that was the way you felt about me."

Derek nodded.

"I need you to say it, Der," Stiles said softly, watching Derek closely. "Come on, big guy, use your words."

"Yes, Stiles, I trust you. I know you're not gonna hurt me, and I can do this. I want to do this."

"This is what I have in mind," Stiles said, standing up and just watching Derek for a good minute. "I want to tie you to the headboard and take you apart slowly. I want to really draw it out, make you want me. Delay the orgasm so it'll feel that much better when you get to come - when I let you come."

A shiver ran down Derek's spine, but Stiles pretended not to notice it. He needed to hear Derek say the words.

"Yeah, I want it," Derek said. "So much."

"Okay, gorgeous. Don't do anything just yet. I'm going to go get that rope. I'll be right back, okay?"

Derek nodded, "Okay."

Stiles went to retrieve the rope that he and Scott kept in the front closet. It was wolfsbane laced, given to them to keep in their apartment by Talia when they first moved to Berkeley, because God forbid what could happen if the full moon came around and Scott wasn't in control. And while the intended use hadn't been this, Stiles knew that Scott had used the rope for this very thing a few times. And yeah, oversharing seemed to be Scott's forte, and after Stiles found about this very thing, he felt like he needed to bleach his brain, but he figured what Scott didn't know wouldn't hurt him.

When he made it back to his bedroom with the rope in his hands, Derek was still sitting on the bed. A grin spread across Stiles' lips as he just looked at Derek. It surprised him to see how much of a submissive streak Derek had in him, and Stiles filed that information away for later on.

Stiles sat down on the bed, setting the rope beside him, and then said seriously, "There are a couple of rules about this, okay, big guy?" When Derek nodded, Stiles continued, "Rule number one of this, Derek, is that you need to speak up, okay? Communication goes both ways, and for this kind of play during sex, it is so very fucking important. Okay?"

Derek nodded.

"I need you to use your words, big guy. We'll make that rule number two. Don't be afraid to speak up, and don't be afraid to tell me no. You say the word and all of this stops, okay? Every single bit of it. The last thing I want is for you to feel like you're being forced or coerced into something you don't want, okay? That's not the way I roll."

Derek nodded, "Okay."

"Good. So very good. Are you okay with what I want?"

Derek nodded, "Yes, so much. I want it, Stiles."

Stiles grinned and then said, "Stand up and strip for me, Derek. Can you do that for me?"

Derek nodded. He started removing his clothes, starting with his t-shirt, and Stiles licked his lips hungrily. God, Derek had such an insane body. He spent a few hours at the gym a day, and damn, it fucking showed. When he was naked, standing in front of Stiles, his cock hard and pre-come glistening on the tip, Stiles took a deep breath, licking his lips.

"What a sight you make," Stiles said, it coming out as a groan. He stood up, and said, "What do you want, Derek?"

"I'd like a kiss," Derek said in a small voice, almost like he was afraid of either being rejected or mocked for it. Stiles just nodded.

"Sure thing," Stiles said, and he leaned in, closer and closer, and covered Derek's lips with his own. The kiss started out soft, just a dry, chaste meeting of the lips. When Derek opened his mouth, however, Stiles took advantage of it and probed Derek's mouth with his tongue. Reaching up, Stiles caressed Derek's cheek, and heard the contented noise from deep inside Derek's chest.

When Stiles broke the kiss mere moments later, they were both panting, and Stiles took a few moments to just breathe. After giving himself a chance to catch his breath, Stiles licked his lips and then said, "Will you lie down for me?"

Derek nodded and did as he was asked. Stiles looked at Derek and then held the rope up, "I'm going to tie you up now, okay?" Derek nodded.

Stiles straddled Derek's waist, tying the rope around his wrists. He tied the knots tight enough to hold, but loose enough that Derek would be able to get out of it if he really needed to.

"I'm gonna leave your feet untied," Stiles said, getting off of Derek to admire his handiwork. He didn't want Derek to feel too restrained. "Is that okay?"

Derek nodded, "Yeah, it's fine."

"Are you going to take your clothes off?" Derek asked, and Stiles smirked.

"You want to see my naked body, huh?" Stiles asked him, and he thought the blush that colored Derek's cheeks was almost endearing.

"Well, we can't exactly do what you want to do if you're fully dressed," Derek said. Stiles nodded.

He pulled his own t-shirt up and over his head and then said, "You make a very good point, Derek." He rid himself of the rest of his clothes, and then leant down to give Derek another kiss. Derek opened up his mouth practically right away, letting their tongues dance together. Stiles cupped his cheek, running his thumb over the stubble that covered Derek's cheekbone.

When he broke the kiss mere moments later, Stiles said, "I'm in charge here, right, big guy? You trust me to make your orgasm good for you?"

Derek nodded, "Yeah, I do. I trust you, Stiles."

Stiles smiled. "Good," he said. "That's so very good."

Stiles left another kiss on Derek's lips, taking the time to trail kisses down his jaw, sucked a bruise into the crook of his neck, and after taking a brief moment to feel a little sad that he could never mark Derek up like that (stupid werewolf healing genes), he continued to trail kisses down Derek's torso. He looked up at him, "Do you want me to suck your cock? Because, let me tell you, it's something I have been thinking about a lot. I love the way you taste, and I love how fucking responsive you are. Is that okay with you - can I suck your cock?"

Derek groaned and nodded his head vigorously. It made Stiles chuckle a little before he got on his knees, licking a stripe up the underside. He glanced up at Derek's eyes for a brief moment, seeing the pupils blown with lust, and then, reaching down, he massaged Derek's balls as he took him into his mouth.

He took him in until his cock was hitting the back of his throat, and Stiles groaned. He had always loved the feeling of a cock in his mouth, but Derek was something special. He loved the way Derek tasted, the way he felt on his tongue. It was such a phenomenal feeling, one that Stiles could very easily get addicted to. He hollowed out his cheeks and sucked lightly as he started bobbing his head up and down.

Derek was starting to get lost in the sensation, and when Stiles started to hum around him, he almost lost it.

"Stiles, I'm gonna come," Derek half-moaned.

"No, you're not. Not yet," Stiles said, letting Derek go with a soft pop. He licked his lips as he looked up at Derek, ignored the slight groan that he heard come from Derek's mouth. He reached down and squeezed the base of Derek's dick to calm him down.

"You trust me to make your orgasm good for you, right?" Stiles asked as he kissed his way back up Derek's body. Derek nodded, and then Stiles took his lips in his once again.

The kiss that time was hungry; it was rough, and domineering, and Derek let Stiles take the lead, handing the reins over to him without question. Stiles broke the kiss to catch his breath, but noticed the lust-filled look in Derek's eye.

"Tell me what you want, Derek," Stiles said.

"I want to suck your cock, Stiles, please," Derek said. "Please let me."

When Derek begged him in that tone of voice, Stiles thought he was going to lose it right then. He took a few deep breaths, reaching down to squeeze the base of his dick to try and calm himself down a little. He knew that he was on the edge already, and Derek hadn't even done anything to him yet. If he kept on like this, he could very much come without even being touched.

"Okay," Stiles said. Derek turned his head and opened his mouth.

"Is it okay if I fuck your mouth?" Stiles said. He wanted to make sure he had Derek's permission for everything, because he was serious. He didn't want Derek to think he had to do anything Stiles wanted to do. Consent was a big deal to Stiles.

Derek nodded, and Stiles slid his dick into the wet heat of Derek's mouth. He moaned as he started to thrust shallowly; Derek's mouth was so wet and hot, and it felt so good around him.

"Fuck, Der, your mouth feels fucking incredible," Stiles moaned out. "Shit, it's so fucking good." He was starting to get lost in the sensation, and when Derek swallowed around him, Stiles let out a moan and removed himself as quickly as possible. If he didn't calm himself down, he was going to come.

He leaned down and kissed Derek one more time before getting into his nightstand, pulling out a bottle of lube. He looked at Derek, "Decision time. Do you want to fuck me, or do you want me inside of you?"

Derek took a minute to think about it, and then said, "I don't care. Whatever you want, Stiles. I just need to feel you."

Stiles nodded as he popped open the lid on the lube and slicked up his fingers. He reached back behind himself, rubbing around his hole before inserting a finger. As he started to open himself up, he brushed over his prostate and groaned loudly. He graduated to two fingers, scissoring them inside himself. When he made it up to three, he couldn't take it anymore; he needed to feel Derek inside of him.

He climbed on top of Derek, straddling his hips as he lowered himself down onto Derek's waiting cock. As Derek entered him, Stiles groaned.

"Oh my God, Derek, you feel so fucking good inside of me," Stiles moaned. "So big and thick…" his voice trailed off as he started to slowly glide up and down Derek's length.

When Derek started snapping his hips up, trying to get Stiles to ride him a little harder, Stiles just shook his head. "I control the pace here, right?" When Derek nodded, Stiles said, "I'll get you there, don't worry about that. Just trust me to make it good for you."

Derek just nodded again.

Stiles closed his eyes, just savoring the feeling of Derek inside of him, and rode him gently for what seemed like forever. A couple of times, Derek snapped his hips up, trying to get a little more friction than what he was getting, but Stiles shook his head, reminding Derek that he was going to get him there.

"All in good time, Der," Stiles was saying, not really riding, but more like grinding, on Derek's cock. He knew that Derek was on edge, but that was exactly where he wanted him to be.

"Please, Stiles, please go faster, go harder, I can take it. Please, I need it so bad, please do this for me," Derek begged after Stiles had been riding him gently for what seemed like hours. Derek wasn't exactly sure how much time had passed, he just knew that he had been on the edge for what seemed like forever, and he was so close that he could practically taste the orgasm; he needed to come.

Hearing Derek beg him like that made Stiles even harder than he was already, and he decided to take pity on him and do as Derek asked. He started riding him a little more roughly, really bouncing on Derek's cock, and Derek almost sobbed in relief when he felt himself get a little closer to his release.

"I'm so close, Stiles," Derek said, and Stiles decided he had tortured Derek enough.

"Come on, baby, come for me," Stiles said. "I wanna feel you fill me up, I need it, come for me. Fucking come, Derek." Stiles started jacking his cock roughly, stripping it furiously. He was so close and he couldn't help the yell that escaped his lips when he came, striping Derek's chest with white. Derek followed him rather quickly, coming inside of him.

They lie there for a moment, the sweat beading on their bodies cooling as they each took deep breaths to calm their beating hearts, and Stiles took a few deep breaths, trying to get his heartbeat under control, he carefully climbed off Derek , and licked the come from Derek's abs and chest, and after swallowing it, he leaned down to untie his wrists from the headboard. He noticed that Derek had a little bit of a bruise where he was tied to the bed, but knew he would heal in no time at all.

He leaned down and kissed Derek, their tongues dancing together, and then Stiles broke the kiss. He got up and started to gather his clothes before saying, "Derek, why did you come over a couple of weeks ago? You know, when you came over and gave me that massage?"

Derek shrugged, rubbing his wrists, "I don't know. I needed to make sure you were okay. Yeah, we're only fucking, and yeah, it's only because of this bet, but Stiles, you're still pack. Pack looks after one another and we take care of each other. I had to make sure you were alright."

Stiles nodded, watching Derek carefully. Finally, he said, "Well, thank you for that, then."

Derek shrugged, sitting up so he could gather his clothes. He started dressing before adding, "Besides that, Stiles, I'm not a dick, okay? I know I act like a bastard sometimes, but I'm really not. I'm not good with people, but that doesn't mean I'm an all-out asshole."

"Yeah," Stiles said softly. "I'm starting to see that."