Help I’m anxious

I’m a really anxious person I’m sorry I probably sound stupid but I just need someone to listen and reassure me

So I have a bf but I think girls are really pretty and beautiful I always check them out and I sometimes wonder if that’s okay because I can’t help but check them out I feel like it’s because I’m insecure about my body and wish I had a body like theirs but I’m scared I’m bi I don’t think I can ever be in a relationship with a girl I’m just not attracted to them in that way but i feel like I’d probably kiss a girl one day I’m just anxious I don’t know