Well, I am probably a lot older than you are, but I was just talking to somebody about this; I had two friends all through childhood who I am positive were gay.
Never once, to this day, has it EVER come up in conversation or action; and we did a lot of stuff together in high school, college, and to this day.
They just didn't make a big deal out of it.
My brother has a good friend and fellow cyclist who was artery hardened at 65...he started biking and has completely recovered. My sister in law is a professor in a cardiac department at a nursing school and she was surprised to announce that this mans exercise pushed his capillaries to start building around his blockage.
Not a perfect solution...but keep kicking!
As to conversion from homosexuality...I think only the Holy Spirit can handle that...in other words, pray without stopping.