Excuse me for my skepticism, but this sounds suspicious. If you were really his friend, you wouldn't be announcing to strangers on a porn site that he's gay when you said he's closeted. You said he doesn't want his family and business associates to know anything about his sexuality, but now anyone who reads this can easily find out who he is and make his life a living hell by threatening to disclose his secret to the people he's close to. That's a really shitty thing to do to someone you call a "friend".
I'll be willing to bet that the truth is you have some kind of problem with this guy (who is probably straight), and you want to get a bunch of strangers to harass him.

[Link]