www.bbc.co.uk/iplayer/episode/p00zhq9f/Stacey_Dooley_in_the_USA_Gay_to_Straight/
I can believe that you can be bisexual and make a choice to go with heterosexuality if family or society pushes you that way. In fact, I know just such a person. I can believe that you can be gay and repress that to the extent that you define yourself as straight because family or religion causes you to be ashamed of what you are. I also know just such a person. However, I can never believe that homosexuality can or should be irradicated from a person.
Some people are gay. Get over it!