Bisexual?

Im questioning my sexuality and I don’t know what I am. I have a boyfriend who Im sexually active with and I know for fact I am attracted to men. The thing is I am sexually attracted to women but I’m not emotionally such as that I’ve never had a crush on one or wanted to be their girlfriend but I’ve been wanting to have sex with a girl and fantasize about it a lot. What am I? Am I bisexual or am I just curious. I’m been trying to find out and it’s just so frustrating