"I know," Derek crooned, his hand stroking the boy's back. "You need it, don't you? Need to be filled and fucked."
He was so beautiful like this, flushed and desperate and coming apart at the seams. The werewolf wanted to keep Stiles like this, always. He pulled out the dildo and smeared it with Stiles' come, then more lube, before pushing it back inside, turning up the settings.
"You're gonna get hard for me again, Stiles," he demanded. "Going to get hard just from this, having your hole fucked open."