Finally realized I was bi and it’s suddenly getting in between my long term relationship

im trans masc nonbinary and have identified as a lesbian for years but finally admitted to myself I’m actually bi. I always just thought it was weird to date a guy but I’m definitely romantically and sexually attracted to them and it makes me curious what a relationship with a man would be like.

ive been with my gf for nearly two years and I care about her and love her deeply. I feel like me being curious on a relationship with a guy has been on my mind so much lately tho and I feel like I’m trapped in the barrier of not being able to explore myself. I’m also young and am finally going off to college, and I feel like there’s a roadblock in my self exploration. I want to be with my girlfriend because she means so much to me and I love her and don’t want to lose her, but now im starting to think I’m more interested in men. idk how to navigate this through our relationship especially because she doesn’t like that I’m bi. I told her and she said she’d never see me the same which just really put me off.

i just need some advice on if anyone has had experiences like this or how to navigate it in my relationship.