hurrahforGAH / Dec 29 2009 10.15
I've never quite been sure what I am, so I eventually settled on bi. A good way to become sure is to compare how you feel with girls with how you feel with boys. There is no real way to be sure, I'm afraid. As for coming out, I know 2 ways that generally work.
You can either write a letter to your closest male friend and keep it between you;
Or do what I'm doing: I started dropping hints to my female friend [who we'll call N] and N sent a message to 3 other friends of mine via a social networking site. I plan to slowly tell some friends and let it leak to other people in the year and a rumor will spread, and then I will come out properly (but also if I change my mind I can deny it and say it's just a rumor!)
It's really a question of which will work best for you. Hope I've helped!