I don't know what to do.

Okay so I should start off by saying my fiancè is gender fluid. So sometimes he identifies as a guy and sometimes he identifies as a girl. He is openly Bi Sexual. I'm okay with it obviously or else I wouldn't be with him, any way tonight we went and seen the movie Love, Simon and he started

crying during it. After the movie I told him it was okay that he cried and that it's no big deal, he then told me he's not gay only bi. so I said okay but its okay to cry then he came out and said "I don't know if I am, do you think I am?" and I now I have no clue what to do, I mean it would make sense we hardly have sex anymore. I feel really emotional and I know it's not his fault I just I want my fiancè. I love him with all my heart and I just want him to be happy even if it's not with me. My heart is just breaking, for him and for me. I'll support him no matter what he's the love of my life and I'm just emotional over the chance that I might lose him and over the fact he's crying over it.