Someone who is experiencing gender dysphoria would be someone who feels that his biological sex doesn't match up with the gender that he feels. So, I might feel like I am a woman trapped in a male body, and you can imagine how horrible that would be to have that kind of experience or to think that you're a man trapped in a woman's body. It must be just a terribly difficult experience for those who experience gender dysphoria. But this is not anything to do with homosexual attraction or activity. It's a matter of one's self-perceived identity.