Re: 15th
Derek wanted to keep holding Stiles' gaze, but it felt like slow motion as Stiles tilted his head back, exposing that pale, slim throat, pulse throbbing just under his skin. His skin was flushed in places but it still had that translucent quality that made Derek want to set his teeth to it, mark it up, bruise it. Without even realizing it, Derek had leaned forward on instinct and he blinked, his mouth millimeters away. It would have been that easy to just take what he wanted.
But Stiles was stubborn and surely he'd follow through with his threat to stop, so Derek squeezed his eyes shut and just breathed for a long moment, swallowing gulps of Stiles' scent before he leaned back, stroking hard and fast. "Didn't want you to stop," he grunted, already close just from the sight of Stiles alone. Glancing down, he let out a groan as he watched precome drip over Stiles' knuckles, filling the air with an alkaline scent.