I recently moved in with BF. I have since discovered that he only changes his underwear after he showers in the evening and doesn’t replace them with a new pair each morning after sleeping in them. I think this is very strange and that each time you get dressed for the day you should change your underwear.
I haven’t lived with a man for a long time so I guess I could be unreasonable to think this way?
YABU - he is still changing them daily so no issue
YANBU - he should change them when getting dressed in the morning