"Night guys!" Scott voiced as he leaned over and turned the light on his nightstand off.
A couple of voices muffling the word night could be heard, as the teen settled down in his bed, drifting off to sleep.
Soon after, the room became silent and still in the darkness.
Derek eyed the back of Stiles's chestnut brown hair, before slowly moving his eyes down towards the teen's ample clothed ass, his crack line was well defined in the light blue pajamas he was wearing, letting the alpha know the boy was going commando underneath.
He loved his mate's tight ass. He just wanted to slide his cock deep inside and become engulfed in the warmness of it, letting Stiles's tight ring wrap around his cock snuggly in a loving hold.
The thought of the teen's sweet cheeks alone was enough to get the alpha worked up. He swallowed hard as he felt his cock poke against the fabric of his sweats, eager to come out and play.
Derek slipped his hand inside the waistline of his pants, giving his aroused flesh a squeeze, before pulling it out of its confinement, letting it breathe. His cock twitched and grew in need, as a bit of precum leaked down the side.
Looking wasn't enough anymore. He needed to feel his mate's plump cheeks. Derek gripped the edge of the teen's pant bottoms and slowly tugged them down to the boy's knees, before stopping. Stiles stirred a bit during the act, but quickly fell back to sleep.
Derek eyed the luscious pale cheeks and the deep black line that curled inward, leading to the tight hole he desired most. He licked his lips and stared hard at the rounded flesh like a lion eying a nice juicy steak.
He couldn't resist, he had to have the teen right then and there.
Derek moved in close, snuggling up to his mate, as Stiles let out a content sigh and smiled in his sleep.
The alpha grabbed his hardened cock in hand and pressed it against the teen's meaty cheeks, slipping the head of it in between its warmth.
Stile's eyes popped open and he let out a gasp in surprise as he felt the tip slip in. "Derek, wha…what are you doing? Scott is right there." He whispered in a panic, eyeing the sleeping teen across from him, who was sleeping on the other twin bed.
The alpha made quick work wrapping his hand around the teen's midsection, keeping him close, so he couldn't escape his hold.
"Can't help it." He replied near the boy's neck, as he took the milky flesh between his teeth, nibbling on it, wanting to mark the teen as his.
Derek pushed his hips forward, sliding his swollen cock further into his mate's hole, until they were flushed up against each other.
Stiles let out a guttural moan at the feeling, and tensed up as Scott blinked his eyes open, looking over at his best bud.
"Dude, you're still awake?" Scott asked half asleep.
Stiles clenched the bed sheets in his hands, his knuckles turning white as he started to pant.
"You okay, man? You're sweating." Scott voiced, as a single drop of sweat rolled down Stiles's forehead onto his pillow.
"Ye…yeah, just a little hot." He stressed as Derek slid his cock almost all the way out, before pushing back in.
"Why don't you take the covers off then?" Scott asked, completely unaware that the alpha was currently thrusting his swollen cock, in and out, of his friend at that very moment.
"Nn…no man, I don…don't wanna wake Der…Derek. I'll be ok." Stiles strained to say as Derek started thrusting deeper.
The teen bit his bottom lip to keep from moaning, as his cock leaked a puddle of precum on the mattress.
"Ok, man. I'm going back to sleep. Goodnight."
"Night." He replied, in an unusually high-pitched voice, as Derek hit his sweet spot, making him shiver.
Luckily, Scott didn't notice and turned away, facing the wall, before falling back asleep.
Stiles let out a breath of relief, before turning his head as best as he could, given the position he was in, about to give Derek a talking-to.
"Der…" He warned.
"Is he asleep? The alpha asked huskily against the teen's neck.
"Yes. Now, what the hell… he started to say but was quickly cut off by his boyfriend's strong thrusts.
"Oh fuck. Stiles moaned out covering his mouth with his hands, as Scott stirred a bit in his sleep before settling down again.
"Shhh, be quiet while I fuck your brains out," Derek said harshly against the boy's ear.
The teen muffled a moan against his hands, and soon the bed was squeaking away under the alpha's wild thrusts.
Fortunately, Scott was a deep sleeper and apparently a snorer, as his nasal breaths helped fade the sound of the moving mattress and heavy breathing in the background.
It didn't take long before Stiles's body tensed up and he shot his load up against his sheets, painting them with his cum.
Derek came shortly after, filling his mate's ass up to the brim, before pulling his cock out with a loud slushing noise, letting the excess drip out the teen's ass, as the pair drifted to sleep.