Spock has always been careful when touching other individuals, and that still holds true, even in the midst of sex. So he keeps one hand on the bed, fingers curling into the sheets, the other slipping between them to stroke Leonard's erection. He sets up a steady pace as he fucks the man beneath him, listening carefully to his breathing.

He noticed the shirt riding up, the faint trace of scars in the midst of thrusting back inside Len, but not even Spock, with his stamina could manage a coherent conversation during sex. But he did make a mental note to inquire later - far later.