Sexxit: Bi-curious guy who doesn't want to be bi-curious.

Hopefully sexxit is the right place for this, but I need some advice and reddit has an awesome community.

I'm a mid 20's male in a very loving long term relationship with a girl that I am completely happy with. But I have this thing where I find penis attractive and am curious about it...but I don't like the male body or facial structure. I've had thoughts about sucking penis and having cum in my mouth, or being fucked anally and came inside. The problem is I feel bad about it because I really love this girl and I'm totally happy with our sex life. Also I don't even like men, gay porn I've seen is a turn off, and shemale porn is too.

Has anyone else dealt with this? I don't like feeling this way and I've been worried about it coming out and hurting our relationship. :(

EDIT: Thanks all, I was out yesterday, coming back these comments help a lot. It's good to know that it's not something to feel bad about. I'll try to work up the courage to discuss this, I'd probably feel a lot better if it was in the open and she was ok with it. The toy store idea was a good one.