How bonding’s going

On day 1, Lucky (white m) nipped her a couple times but was calm the rest, he’d just sit still and whenever she came close would put his head down.

Muffin (Beige F), she would roam round the bath and would kind of rub against him once he stopped the nipping.

Today (Day 2) Lucky flopped! Seems pretty chill, puts his head down when she’s close as seen in the picture. Muffin’s just as stubborn though. She’ll kind of stuff her head under him like in the second pic.

I’m honestly really happy with how it’s going. Neither of them are ones to groom so I’m curious to know which will cave and groom the other first.