"Being gay is not a choice!" ... Oh yes it is.

If you say, "I don't have a choice", then you are admitting something is fundamentally wrong that needs to be fixed.  Living contrary to your nature and lying to everyone that loves you is also a choice.  You choose whether to act true to your nature, against your nature, or not to act at all in a life of isolation.
I chose every day to share my life with and love Patrick, and I would not change a thing.  I am living with the consequences of my choice, but in this case the consequences are unconditional love, honesty and forgiveness.  Nothing about this choice is wrong.  Like the golden oldie croons, "If loving you is wrong, I don't wanna be right."
If you love someone who owns their nature, it is your responsibility to love them for it.  Anything less than that is the true abomination.  Choosing to treat them as a pariah because they don't follow the schema of your worldview is the real sin.
Stop saying you don't have a choice. Instead, own your choice.  It is your ultimate right and responsibility as a human and free moral agent to embrace your nature and love yourself.