I wanted to ask your opinion.

I am in a loving and committed relationship with my girlfriend. We both identify as pansexual. She has had relationships with women and trans before, and it's as open as it gets. I came from an extreme conservative background and whereas I've been open minded, I've never exercised my curiosity to explore with men or trans.

My girlfriend is encouraging me to do so, and whereas I believe that I am ready, I have this HUGE sense of guilt of even attempting anything, because deep, deep, deep, deep inside my psyche believes that I would be disloyal to her.

Edit: as additional context, we're considering moving in together in the future, so while I live alone seems the ideal time for me to explore.

Obviously I know that this is not logical, but my psyche will not let me think/feel differently.

Have you had situations like this and how did you manage to overcome it? Any advise is welcome.