Both
Living in staff accommodation, whilst working in health care, the sight of my fellow trainees and friends naked stopped being a novelty very quickly. We gents were still outnumbered 20: 1 in the late 1980's, although knocking on the door of a sleeping gent's flashing at us when returning home from an occasional 'girly' night out was a kind of routine homecoming part of it.
In college we tried to be supportive of our housemates. In one case we saw a guy we lived with nude in the "Equus" play. It was a bit cringey since I'm sure he had a semi during the nude bit! The second case was our dance major who moonlighted as a stripper. She gave us friendly lap dances but also exposed my boobs to the crowd!
I had sex with her later, so "yes and yes".