Don't tell the gay community sexual orientation is open to change, and especially don't tell the trans/homophobic community. I personally think it's one reaon why some in the gay community don't like transpeople, namely m2f's, because many do change their orientation from gay as males to straight as women. They don't get the attraction is the same, the thinking and expression changes. And the trans/homophobic would jump on this for a "cure" not realizing they're part of the mix too. My personal belief is that we're all born bi-sexual, and only express a general preference because of our individual nature/nuture circumstances, and it varies with time, place, circumstances and situation over our life. And one's susceptibility to changes is generally nature (genes), why some feel exclusively attracted to one sex, some don't and some vary. But it's not always just sexual attraction, but also about interpersonal attraction for the whole range of factors. People like to limit it to sex because they think it separates things and people, when it doesn't. Why else are them sex/gender specific clubs, groups, etc. if for everything but sex, but includes companisonship, friendship, character, etc.? So why is just sex considered differently by recent cultures? It wasn't in the past, sex was just that, and without any overtones of morality.
