"If it hurts, tell me," he mumbles, eyes darkening as he watches Stiles' tongue dart out to wet his lips.

He's careful with his hand, pulling away from Stiles even though the friction is so nice, he takes a moment to admire how Stiles is laid out before him instead, running one hand along his hips and thighs. He nudges his legs apart and slips his hand between them and against Stiles' skin, searching for the tight ring of muscles presently hidden from his view.