Even though there was some build up the attitude shift seemed sudden. I'm guessing Fooly will act grateful to the dad for ensuring she has such great abs. Then they'll hit it off discussing how awesome she is.
I've had a theory for a while that when he collects all 7 meteorite rings, has them on all the girls/people, he'll say something about wishing he could go home while they're all near him and suddenly vanish, leaving them all behind. Elf san is probably currently hunting down some other wish...