I do like some guys in some ways
Do you feel sexually attracted to men at all? Or just attracted to other things about them?
I'm bi/pansexual. I had serious relationships with men but occassional lesbian sex with mostly 'bicurious' friends etc. Until I was 24 I didn't have a problem with it, then I started to feel confused about it for a long time. Last year I had a brief relationship with a woman. I lack confidence with women because I have very little experience compared to that I have with men, but my girlfriend last year didn't mind that I was inexperienced, she just showed me what she liked. The right kind of person won't mind.
IDK why I'm going on about myself, but I thought maybe some of it might resonate with you.
I do go all coy with women I fancy and stuff
I think this is why I told you about my experience. It sounds like a lack of confidence is holding you back, maybe?
Do you think you could chat to your DH? Maybe he'd let you have some freedom to go out and explore (don't let him push you towards a threesome unless you want to -grrr, men, sigh!)
If you don't feel the direct approach with your DH is right for you, perhaps you could see a counsellor to talk through what you feel?