I asked around to some of my friends who happen to be homosexuals, and got a variety of answers, most of which were that they've been gay as long as they could remember. The best and most profound answer came from a girl I know who said, "I could've fallen in love with anyone. I just happened to fall in love with a woman first." Most of them, (and I now) believe it's not genetic, it's just a choice which is influenced by their personal histories.