@kaia what is allowed referring to?
Being naked?
Having media with nudity?
In my limited view, modesty leads to sexualization and fetishization of nudity. Today I saw a skillfully crafted sculpture of a naked man. I'm bi. Was I aroused by the statue? Nah, the context was non-sexual.
Nudity is not sexual in the opinion of the members of my polycule and me.
Wanting to be a (mind-)virgin can be very damaging to the mental health.