THE WORLD IS GAY!!! XD That is the answer to all questions!!!
As many as he wants; earrings don't make a man gay.
Some do, with or without knowing the orientation of the male.
there is no possible way to prove anyone is "gay" without asking. Now someone can tell you that this person had sexual relations with them, but that doesnt necessarily mean they are gay
You can't. The only way to know is for him to tell you.
If by "men" you mean straight men then yes it is entirely possible for a staight man to love a gay man or even another straight man without being gay himself. This does not mean however that the straight man suddenly becomes a gay man and neither does it indicate that the man is bisexual. It simply means that he is attracted to a certain male but is still strictly attracted to girls.
Because he is a gay man
A gay man is already a man.
You don't have this choice. If you are a gay man, you are a gay man. If you are a gay woman, you are lesbian.
Yes, a gay man can impregnate a woman because a gay man is still a MAN
Yes, he is a gay man. He like muscular man !
No, nothing can make a man gay except being born gay.
The average gay man is virtually the same as the average straight man.