I have no problem with gay people.
No reason not to.
But I dislike flamboyant gay people, in the same way that I dislike flamboyant straight people.
I don't like anyone to who has to constantly re-affirm who they are in front of people. If I didn't ask, you don't need to tell me. And if you have told me, you don't need to make a song and dance about it and show it off everytime we meet.