Um... Try being boyish and see if it works for you...? I don't know. I would ask why you think you should have been a boy, but I have a feeling I would get a complicated answer that I probably wouldn't understand all too well.
ME FUCKING TOO! I hate being a girl! I was meant to be a guy and I hate that I never will be! I am gay but I know that if I was a guy I would be gay aswell! I can't bring myself to think about doing something to something so... not like me... *shudders*
I'm not helpful... I'm sorry.