Find someone to experiment with, if I may be so bold to label it as such. Some people don't realize their true sexuality until the 'moment' comes. I recall watching a stand-up comedian who said, "For a while, I thought I was gay. But the thing was, I didn't know. So I heard about this homosexual 'hang-out' of the sorts; a place to find a 'friend.' Well, sooner or later I had decided to go there. I walked around the woods for twenty minutes wondering if I was in the right place when a fully naked man jumped out from a tree, hanging in the breeze. Only at that point did I know...I was straight."
I probably butchered the whole bit, but fuck you, lol I can't remember the comedian's name for Christ's sake...
Anyway, my point is, you'll never know until you try so go...erm..."undercover," and find out for yourself.