there's a philosopher named Foucault who critiques the entire notion of sexuality, because its a normalization based upon the practice of sex, rather than anything that has any intrinsic or essential component to it.

By this view, sexuality (much like race) is a social construct and can just as easily be resisted as embraced.

So far in my life at least I've only felt sexual attraction towards women, although I will admit to being attracted to male friends of mine in a different sort of way. Brotherly love I suppose.