So I don’t knew wether I’m gay or straight,

This is gonna be pretty short since I can’t really describe it well,but I never feel a sexual attraction towards anyone ever, but I also have fantasies sometimes so I’m kind of tied between two situations,since sometimes I want to have sex with a dude or a woman but I wouldn’t really go through with it/agree to if I was in that situation, I have no idea wether I’m just Bi but it bothers me a lot