In our society we put too much emphasis on putting people into categories. Gay, straight, bi, black, white, etc. You are who you are, and you shouldn't have to categorize yourself.

I know others have said it, but just not being repulsed by the idea of sex with a man doesn't make you gay. Lots of people have messed around with the same sex. I have. Does that make me gay? No, I didn't really enjoy it. It was nowhere near as good as sex with a woman, which is like a million times better for me.

The idea that messing around with, or being somewhat attracted to the same sex is a big deal is purely societal. Any strong anxiety you have on the matter has more to do with your thoughts on the way society would view you than anything else. And honestly, it's none of society's business.

Did I make any sense? I was similarly conflicted a while back, (although I didn't have a relationship to worry about) and this is my attempt to explain the conclusion I came to.