BI.. PLEASE HELP

Hey girls so pretty much I have a boyfriend and I am so inlove with him but recently I've started to stress myself out like maybe I'm bi or maybe I'm lesbian?? I don't know why this suddenly happened but I have ALWAYS loved guys and never have had any interest in girls and I still don't! I think girls are pretty and have nice bodies but that is it. I will never and would never want to kiss them or anything further.. so I don't know why I am worried about it honestly?! Someone help because I feel stupid :)