Am I bi, and if so how do I tell my girlfriend

im not sure if im bi and just need someone's help and guidence because im scared.

Do you have fantasies of having sex with both sexes frequently? If you do you could be bi. May be you can try watching gay porn and see if its exciting you? First find out if you are bi, before telling her.

I'd hate to be pigeon-holed just because of my fantasies . . . You don't say how old you are, but believe me, just because you are having sexual thoughts does not make you any one way - at any age. Why do you feel you need to tell your GF?