That's all just ridiculous. Let's start at the beginning shall we? It wasn't that you always knew the opposite sex was the "correct" sex, that was what you were taught. What you grew to believe. So when you did find that you were "curious" about both genders the decision was already made for you.
As for the other part, complete rubbish. Did you ever think he played with dolls because he was...gay? Playing with dolls or being more interested in more feminine type things doesn't make one a gay boy, they play with them because they ARE gay. There were born that way.
Not raised. You can't raise straight or gay. Completely absurd. And it isn't a matter of abuse either. There are many straight people who have been abused as children. If it was a matter of abuse then we should have a whole hell of a lot more gays in the world. And what of the gays who weren't abused? Who played sports and did "manly" things? Huh? Nope...chock full of absurd that post was.