Also, "using cynical manipulation tactics in order to gain a position of trust with vulnerable children" is setting off *all* my warning bells, LW. Maybe he's not doing anything else unethical with them once the trust is established. But it sure does make me wonder.

I was going to comment on this. He might just enjoy being seen as that approachable and understanding guy by the kids, but that might also be a first step towards something worse like abuse.