A Matter of Choice (слэш)

“What else aren’t you telling me?”
Because he’s pressed up against Peter, his ear to the broad chest, he hears the way Peter’s heartbeat speeds, and, for the first time since waking up after being attacked, he’s afraid for himself.
“Once the vampires realized what you’d done,” Peter starts slowly, and Stiles clutches at his shirt to ground himself. “They decided revenge was appropriate.”
“Oh God. Peter, tell me I’m not—”
“I’m sorry, darling. You’re turning.”