Sterek Smut

The Bet (Part 1)

Plot-Derek and Stiles have a bet going on which of them can go longer without having sex. All seems fine until the blood moon comes around and Derek struggles to suppress his werewolf side.

Warnings-Rough sex, anal, rimming,biting, choking, blood kink, knife play (claws), hair pulling, pain kink, orgasm denial

Derek woke up to find Stiles curled up against him. Derek examined the fading bite mark on Stiles's shoulder from their previous bedroom activities. Derek felt himself getting hard just thinking about the night before.
"Derek."Stiles mumbled
"Yes Stiles?"Derek replied
"It's eight in the morning, why are you hard again?"Stiles asked
Derek laughed "You say that as if I can't feel your boner against my leg."
Stiles shifted to prop himself up on an elbow.
"I bet I could go longer without fucking than you could."Stiles smirked
"Oh yeah?"Derek chuckled, raising an eyebrow "And what are the stakes in this bet?"
Stiles thought for a moment "If I win, I get to be on top for a night."
"Fine, and if I win?"Derek pondered
Stiles thought again and then said something inaudible.
"What was that?"Derek questioned
"I'll let you fuck me in the woods ."Stiles whispered
Derek's eyes widened, he'd wanted to fuck Stiles in the woods one night when they were hiking but Stiles had been far too scared of getting caught. Since then Derek had fantasized about it many many times.
"Deal."Derek grinned "No sex and no getting yourself off."
"Game on."Stiles nodded
Just over a week passed and both of them were very pent up. They both had been teasing each other ruthlessly every chance they got.
"So with the blood moon approaching."Derek explained "Newer werewolves should probably be chained up just for the night, first blood moons are very difficult, even for older werewolves."
"Why?"Issac asked
"Because the blood moon dials up werewolves to like a hundred. It's a lot harder to control yourself."Derek told "It can be dangerous."
The moon was beginning to shine, and Derek was staring out the window.
"You aren't gonna go all crazy on me are you?"Stiles wondered
"No."Derek assured "I'll be fine."
"Promise?"Stiles asked
"Promise."Derek nodded
"Ok."Stiles smiled "Well I'm going to bed."
"Good night pup."Derek said
Derek walked into his room, Stiles's scent immediately overwhelmed him, his boner growing quickly in his pants. He groaned as his skin began to feel hot and sweaty. Stiles was sleeping peacefully in bed, wearing nothing but his boxers. Derek was overtaken by the feeling of lust and his mind wandered to all the times that Stiles had teased him over the week. He was losing control quickly and he needed to do something. He laid in bed and pressed himself up against Stiles hoping for some relief, but it only made things so much worse. Derek was practically panting at this point, desperate for release.
"Der?"Stiles mumbled
Derek nuzzled into Stiles's neck.
"Der are you ok?"Stiles wondered, not fully awake
"I need you."Derek practically begged
Stiles suddenly became aware of Derek's giant boner pressing into his ass.
"Then have me."Stiles consented
Without another word Derek had pinned Stiles to the bed and was kissing his entire body like an absolute animal. He got to Stiles's side and bit down hard causing Stiles to practically scream which was followed by a low moan.
"I forget how much you like pain."Derek smirked
"Love it."Stiles admitted, as Derek sunk his teeth into his other side "Fuck Der."
Derek flipped Stiles over quickly and ripped off Stiles's boxers.
"Der please be careful."Stiles slightly whined "It's been a little bit."
"Don't worry puppy."Derek assured
Derek dug his claws into Stiles's sides and began to drag his tongue over Stiles's entrance. Stiles let out whiny moans and Derek dug his claws in deeper. Derek's slow and gentle actions only lasted a few seconds more before Derek returned to his animalistic ways. His tongue was attacking Stiles's hole and Stiles was moaning like a lunatic. Between the pain coming from his sides and the pleasure coming from Derek's tongue he couldn't control himself. Derek removed his tongue and Stiles groaned at the loss of pleasure. However the sensation was quickly replaced by Derek's dick roughly thrusting in and out of him.
"Fuck Der!"Stiles screamed "Fuck...faster...please."
Derek wrapped his hand around Stiles's throat and gripped it tightly as he leaned into Stiles's ear.
"Please, what?"Derek growled, sending chills down Stiles's spine
"Please sir."Stiles corrected
"Good boy."Derek praised
Derek's eyes began to glow as he his pace became more like an animal, he gripped Stiles's hair pulling the smaller boy's head back as he rammed into him at a werewolf pace. Stiles was screaming and could barely control himself as he was shouting and moaning.
"S-sir I'm."Stiles moaned "Close....fuck ah."
"Wait."Derek snarled
Derek's stamina seemed to have doubled and his paced was just getting faster. Stiles was in complete bliss, there was drool running down his face. His whole body was shaking but Derek didn't show any sign of slowing down. Stiles felt Derek finish inside but Derek's pace didn't even slightly slow.
"S-sir."Stiles whined
"No."Derek denied
Derek tightened his grip on Stiles's hair as he continued to slam into him.
"Look at you."Derek laughed "You can barely speak all because I'm using you like a personal sex toy. Fucking you as much as I want whenever I want to."
Stiles couldn't seem to form a sentence he simply just let out whiny and breathy moans. He felt Derek's dick hitting his prostate with every single thrust and Stiles was so overstimulated he felt like he was blacking out.
"Go ahead puppy."Derek ordered
Derek released Stiles's hair and wrapped his hand around Stiles's cock. The moment Derek's hand made contact with Stiles's throbbing dick, Stiles came hard, his body was convulsing as he came all over the bed and Derek's hand. He was moaning loudly as Derek finally slowed his thrusts. Stiles completely collapsed, his whole body was on fire. Stiles was still convulsing as his orgasm died down. He was barely conscious as he came down from his high. Derek let out someone equivalent to a howl as came for the second time. He finally pulled out of Stiles as the light of the moon was dying down. Derek rested a hand on Stiles's back and Stiles spasmed still heavily overstimulated.
"Are you alright pup?"Derek asked
"Oh just fine."Stiles sighed "This was just a little much after not fucking for over a week."
       Derek cleaned up the bed and carefully cleaned up Stiles who was barely conscious. Derek laid Stiles down in bed and wrapped his arms around him.
"I'm sorry I kinda lost control."Derek told
"Don't be."Stiles assured, his voice soft "It felt good, I'm sorry though."
"What are you sorry for?"Derek questioned
"You lost the bet."Stiles murmured, as he fell asleep