Dreaming about someone else

I’m bisexual and before my fiancé I was always more interested in girls. Lately I’ve been dreaming a lot about my friend and not just like oh she’s in my dream but romantically. In my dreams I’m always trying to get her attention and express my feelings to her and last night in my dream I kissed her. It honestly has me feeling really weird and confused. I know a girl who was with her fiancé for a long time and she was also bi but then she came out and said she was actually gay and it scares me. We have two kids together and I love our life but I just can’t stop thinking about what if. Ugh also no I would never cheat on him, I’m afraid though that one day I’d so badly want to be with a women again that I’d split up our family. Then my kids would hate me or he’d hate me.