If you are blind how do you know you are LGBT? Another argument against the absurd myth that homosexuality is learned. Sexual attraction/orientation is a visual experience that emerges from deep within the mind; it is evoked early in development by visual stimuli, by visible attraction toward certain people and away from certain other people.

https://www.buzzfeed.com/ryanschocket2/9-blind-gay-people-share-how-they-first-knew-they-were-gay