Well, seeing as kids growing up nowadays basically have to form an opinion on sexuality and aren't just doing as they're told anymore and are self-taught, this is pretty much inevitable.
However, it must be stated that "your sexuality" may take on two different contexts. There's the orientation side of it which is basically your natural liking and dictated preference. Bi, straight or gay. Then there's the conception side which is imaginitive and where your fetishes, curiosities and tendencies to experiment with that particular idea pretty much emanate even though you may never actually act on it or publicly identify with it. Basically your seductiveness.
shyt isn't black and white anymore.