That's arguable - folks are notoriously incapable of controlling their sexuality, to the point its reasonable to postulate free will has nothing to do with it.
It may be a moot point though, i've always felt that it's a gray area - not black or white.
Eg, i could feel/claim to be entirely straight. But if i have a drunken experience in college, perhaps i realize that i enjoyed it a bit. Did i change? Or was i never "100% straight" to begin with?
Who's to say that you can't even be wrong about your own sexuality? We're wrong about things all the time, even within our own minds. Is sexuality any different? I doubt it.
The idea that you're born straight or gay appears to be created by a desire to separate humanity. You're in one camp, they're in another, and with that separation you can judge them differently.
Interesting how it all comes about though. We're complex creatures in everything we do, it seems.
