I’m a man and I’m completely straight. My girlfriend was bi but I didn’t know until recently. Although she’s faithful I don’t know why I don’t feel okay with her being bi. I told her to change her sexuality for me but she said no it’s inbuilt. That she can’t change her sexuality instead she chose to be with one partner regardless of either gender. I’m not comfortable and I don’t think I’m homophobic but why can’t she change her sexuality for me?