It's useless.
If you do change your sexuality that will damaga part of your brain. First of all, it will damage your logical thinking. Changing your sexuality ia like branding your mind with the fact that guys like girls and thats the only way it is and can be.
Second, you will have a split personality. Your brain will flicker between gay and straight, and no it's not like being bi. You are attracted to the same sex, but you have to constantly push yourself to like the opposite sex. And it's nervewracking.
Third, your hormones rise. They become extremely unstable. It's like eating a jar of peanut butter when you are allergic. Your body rejects it and it makes you sick, but you continue anyway.
And fourth, you could, and probably will, develop OCD after being paranoid for long enough.
And I didn't do this. It was a friend of mine. It really ruined him. Please. Coming out is the best way.