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“Oh, baby. Look at you.”
Derek shivers at the raw desire in Stiles’ voice as hands glide back and forth over his hips. It feels like hours have passed since Stiles guided him down on his knees, stretched him open oh-so-sweetly and pressed his shoulders down onto the bed as he fed his cock into Derek's hole, whispering 'Stay put, baby' once he'd filled Derek to the brim. His thighs tense as he holds the position and he’s nearly trembling with the need to move, to fuck himself back onto his mate’s cock, but he knows this is Stiles’ favorite part. A finger traces over the swell of his ass before reaching his hole where he’s stretched open, stuffed full. Derek gasps as Stiles drags the tip of his finger over the taut muscle, rubbing almost reverently.
The click of the camera shutter is loud in the otherwise silent room and Derek whines, a gush of slick rushing from his hole. Stiles coos approvingly and rubs again just to hear Derek whimper. He’s seconds from begging, has been for nearly an hour while Stiles positioned him this way and that, pausing every few minutes to capture the moment with that damned camera.
He knows what he’ll see when Stiles shows him the photos later and the thought excites him all the same. Derek on his knees mouthing at Stiles’ cock through his jeans. A closeup of his lips, stretched wide around the head of Stiles’ cock. His ass, striped red with Stiles’ belt as slick drips down his thighs.
In a moment of weakness, and against Stiles’ direct order, Derek rocks forward an inch and then back, grinding against the cock inside of him with a sigh. It’s worth the punishing slap on his ass and his own dick jumps at the brief flash of pain.
“Are you that desperate for it, Der?” He hears the gentle thump of the camera being set on the nightstand before Stiles stretches across his back, winding his hand under Derek and then around his throat which he grasps gently. “Do you need to be fucked baby? Couldn’t just sit there for another minute, could you?”
A gravelly whine rips from throat as Stiles’ cock shifts even deeper. With his mate’s weight settled on his back, his arms caging him in, Derek feels safe and small and thoroughly owned .
“Sti-Alpha, please!”
Stiles shushes him quietly and mouths at his shoulder, teeth dragging across his skin. Derek’s fingers tear into the sheets and his heart pounds in his chest. Stiles shifts his hand under Derek’s chin and slips two fingers into his omega’s mouth, grunting in approval as Derek begins to suck eagerly.
“I know baby, I know. You just get so stupid for it, don’t you? Can’t help how cock drunk you get, huh?” Derek’s cheeks flush, arousal flaring in his belly at Stiles’ teasing and he whimpers again. His alpha’s hips begin to move, thrusting slow and deep and Derek nearly shouts, elated at the flash of pleasure each movement brings. “I’m gonna take care of you, honey. I just couldn’t help myself with how pretty you look.”
He laves at the sweat-slicked skin of Derek’s shoulder and bites, teeth sinking deep as his thrusts quicken. Derek groans as Stiles’ cock pounds into his prostate over and over, the slick squelching of his hole echoing through their bedroom as his pleasure ratchets tighter and tighter. The fingers slip from his mouth and Stiles wraps his arms around Derek’s shoulders, pulling the omega back to meet each brutal thrust of his hips. His cock drips continuously as it sways between his thighs, achingly hard and flushed red.
“You gonna come for me baby?” Stiles’ voice is gruff and breathless and Derek nods jerkily, looking over his shoulder to meet his alpha’s dark gaze. He gasps at the heat in Stiles’ eyes, belly clenching tight at the lopsided smile he gets in return. “Been so good for me, Der. Go ahead, come on my cock.”
Derek’s pleasure rushes to a head with the permission Stiles grants and his vision whites out as his claws tear into the sheets. Fireworks dance behind his eyes, every muscle in his legs trembling as he spurts messily onto the bed. Stiles continues to fuck roughly into him, panting against his neck as his hips begin to stutter. Tears gather in Derek’s eyes as his orgasm drags on and on, the constant onslaught against his prostate sending wave after wave of pleasure through him until it borders on pain and he’s gasping wetly, open-mouthed into the sheets.
He feels the stretch of Stiles’ knot and his alpha groans, spilling deep inside of him and forcing the rapidly growing base of his cock past his rim, grinding weakly as he rides out his orgasm. Derek grunts at the stretch, tears spilling over as he’s suddenly stuffed impossibly full. He knows it's only his imagination but Derek swears he can feel his belly swelling with the rush of his alpha's cum steadily filling him up. Stiles pets his hip soothingly as his movements slow and their thundering hearts calm.
Over the sound of his heaving gasps, Derek hears the click of the camera once more and rolls his eyes.
“Stiles!”
“Okay, okay! I just wanted one more. I’m done now, promise. Gotta document the process, ya know?” Stiles shifts them both gently until they are lying on their sides, spooned together tightly while they wait for his knot to subside. He strokes a hand through Derek’s hair and kisses along his neck, drawing a pleased hum from the omega. “Feeling good?”
Derek sighs happily and turns for a kiss, “So good.” His eyelids are growing heavier by the minute and he snuggles back into Stiles’ arms, basking in the radiant heat and their intertwined scents. “Think that was the one?”
“Mmm I hope so. Though I won’t complain if we have to keep trying.” Derek huffs at Stiles’ cocky grin and bumps their noses together playfully.
“Oh, you won’t complain, huh?”
Stiles laughs and pats his cheek, “Fucking a baby into you is hard work, babe, but someone’s gotta do it.” Derek lands a kick to his shin and Stiles squawks, eyes wide though full of mirth.
“You’re lucky we’re stuck here or I’d kick your ass, Stilinski.”
Nuzzling into the hair at the base of his neck, Stiles just hums in response. His hand slides from Derek’s hip to his flat stomach and he rubs affectionately, flexing his hips. A smile tugs at Derek’s lips as his heart thumps and warmth pools in his belly. Sleep looms heavily over them and he relaxes into his mate’s embrace, happy beyond measure. “Love you, Der.”
“I love you, Alpha.”