I think I made my best friend's crush get rejected.
Why would you do such a thing?
I know she doesn't like him, but he wants her to like him back.
You shouldn't do something that would intentionally hurt a friend. It's always better to want our friends to be happy.
He's old, doesn't have a job and dresses like a loser. He needs to wake up and realise that he's not going to get what he wants.
This isn't something you should interfere in. I think it's best handled by your friend.