Can a guy who's been sexually abused become gay?

A common misconception about homosexuality is that it is possible for a heterosexual person to be 'made' homosexual' by certain events. Recent research has shown that the physiology of the brain of a homosexual male is more similar to a heterosexual woman than to a hetero man. The same is true of homosexual women and heterosexual men. With people of different sexual-orientations possessing physically different brains, it is highly unlikely that any event, even an emotionally traumatic one like sexual abuse, could completely change the brain structure of an individual leading to them becoming homosexual. It is a well known fact though that sexual and other forms of abuse can have huge impacts on behavior.