Drunk nude request

Ok so here goes. My fiancée has a nephew that he’s about 15 years older than. The nephew is engaged. One night the nephew got drunk and called and asked my fiancée for nudes of me and another girls. My fiancée told him to get them from his girl. This whole thing really pisses me off because I felt like I had been violated (if that makes any sense) by the nephew. My fiancée claims that though I’m angry I should calm down and let it go because he was really drunk. Am I overreacting? Is being drunk a valid excuse for people to do what they want and get away with it? I asked him how he would feel if I were drunk and asked a dude for nudes and his response was “girls don’t ask for nudes” please help me and give me some advice because I’m at a loss with this.

****EDIT**** for the “he told you about it” I wasn’t told about it until many months after it happened and it was a slip up.