someone has a gambling problem

[defyodds]

I play at a casino and in some home games and we see many of the same people several games. There is one gentleman who obviously is in over his head and heading for a crash. I have a conflict of interest because I want to win his money but I feel bad about whats happening to him. He is not a good friend. I see the crash and burn coming. Should I speak to him about it or keep my mouth shut. Even when I write this I feel like a hyprcrite because I know I like his play.