That sucks, but if he doesn't listen, but why do you continue to try to help him? I understand you like the game, I respect your patience and perseverance try to help him. But why try to help someone ungrateful and doesn't listen to you if you are just trying to help?
Might I ask, you dont not need to answer at all, I apologize if I'm crossing the line. But how is he blackmailing you? And seriously, I know what you said. But if you really need to, you do not need to associate with him anymore. Try to look for something new..