Wow! I have struggled with this question since I was 11 years old. But before that age, my father had always criticized me for standing like and acting like a "fairy." I do take into account that he was "all man" or a "manly man," being a decorated soldier. But I also remember women my mother would run into in public with me close by in those women telling her what a pretty little girl I was.
The first time I was abused by a male, I was five years old. It lasted for about two weeks. The next time was from the ages of 11 until 14. Once the abuse was over, I was very sexually active and promiscuous both sexes, sometimes even both at once. And I always wondered about the whole " chicken or the egg" question: " was I like this before the abuse, or did the abuse somehow make me this way?"
I guess I will never know. But I remember during the years that my father said I was a fairy, being attracted in a very innocent way to girls. I am blissfully happily married now to a woman, but I am definitely Bi.
This was a really intriguing question. I hope my answer isn't too uncomfortable for anyone. I have to admit, I'm a little self-conscious seeing that I am the only one who answered it in the way that I did.