Do you have any mutual friends that can give you a clue to how he is, what he is doing? Are you close to his family at all? If you don't want to e-mail him personally maybe it would ease your mind to check up on him in another way.
Also, if you have serious questions maybe you could leave a post in a moderator's thread, or I think if you click Notify, they will get it and perhaps respond with some good advice.
M 39 H 34 D 6 M almost 8 years T 11 years Bomb: 6/5/08