this feels disgusting to red when they get into age specifics, so he is worried about her drinking cuz she is 15 but aight with fuc**** her...
I heard theres no tbate anime in ba sing se
its literally implied few times that they have had s**.i aint gonna bother backtracking but if you want you can. in one scene the old ladies alluded to it asking if they had fun last night, iirc it was after a fight happened, i think it was the night after the kiss.
also that still doesnt change the main point being there age gap of a 35 yo man with a 15 year old, waiting till she turn 18 to get married to her while already being betrothed, if the author didnt add modern rules then although still disgusting, fair point about it being historic.