She adds that many girls know what their sexual orientation is without being sexual with someone.

So, girls who wonder whether or not their actions make them lesbian or bisexual can remember that everyone is different--and it's normal to be different. Focus more on how you feel about your sexual behaviors, and less about what these behaviors do or don't "make" you.

"Be who you are and feel what you feel," adds Schroeder. "When it becomes important to attach a label to those feelings, you'll know when the time is right."

Additional reporting by Contributor Alexis Henry, 17, of New York City.

Want to know more about sexual orientation? Continue to the next page...