"At first." Ivan sees no reason to lie, not to a patient and not about this. "But women and hermaphrodites would say the same thing about being penetrated vaginally, and yet that doesn't stop them from having sex that way regularly." Maybe not the most comforting thing to hear, but Ivan hopes it will do more to help him than hinder.

Shrugging, he lets his head rest on top of David's. "While my focus is going to be your enjoyment, I can't prevent any uncomfortableness that might happen -- but I need you to tell me if it hurts or you want me to stop."