Now that he knows he can fly, the literal jumps... he's getting to the point of being eager for them.

Different kinds of jumps... I'd say trust. Open as he is, there are barriers that few people have come close to since ...probably since he last left his family in Ireland. He's had years of spending long times away from home and he's learned to not make those obvious to his peers, but still. Having more people with abilities around him is making him consider the possibility, if not the probability of it.

He also likes the thrill when somebody else trusts him, the way Alex jumped, knowing Sean would catch him.

So yeah, I think at this point, I can say trust is that one jump. (Older? Ahhh different things.)