As someone who knows personally what you're goin through ( I'm 17 and never been SEXUALLY attracted to a girl), Let me be the first to tell you, WAIT. Don't do anythng crazy. Really think about this some more. You'll see in time whether you like guys or girls intimately. Serious, you will........I did. I know it's hard to think you MIGHT be gay, but then you DON'T really know do you? Do you have any CLOSE friends you can talk to? A brother? It helps to talk to someone you know.