My and my boyfriend Alex have been dating for almost 3 years now. Alex is generally a good man and he strives to make me happy. I haven't had any doubts about him until now.

Anyways, one day Alex was hanging out with his friends so me and my best friend decided to go to the pool together.

We go to the locker rooms and I see Alex and one of his friends, wearing a wig and feminine makeup, pretending to gossip to each other. I immediately confront him and ask what he's doing. Alex says in a high pitched voice, "I don't know you," and run away.

When we got home, I asked Alex what he was doing disguised as a woman in the woman's bathroom. He says that he was just curious and it was harmless. He claims he was questioning and exploring his gender.

I asked his friend who admitted that they just wanted to get peeks. He also said they've been doing it for years.

I was horrified and told Alex that I couldn't be with him anymore. He tried to protest and said I was throwing away years of love over his hobby.

Alex and his friend are definitely mad at me, but all my female friends are horrified. So Reddit, AITAH?