Jon going to Kon for advice because he wants to have sex with Damian. Kon invites him to join next time Tim is over so Jon can get a more hands-on lesson on how to fuck a robin.
That has to have been the hottest moment of Jon's life up to that point, sandwiched between his bruncle and Tim, Kon guiding Jon's every touch, telling him exactly what he needs to do to get a Robin right where he wants him—
But I can't help but to think that when he does finally go for it with Damian, it's just Damian very quickly realizing that Jon's pulling the same moves that Tim would. Then he's yanking Jon back by the hair and looking him dead in the eyes trying to determine if that's the most thoughtful thing Jon's ever done to make sure Damian enjoys himself, or the most idiotic, because Damian would have loved nothing more than to be the one to break Jon in.