Thanks to you all that have read and answered my quest:
Thanks, PoeticPhilosophy; I see what you mean and perhaps I have tried too hard to get an answer to my question from this person, so in the future I am going to be easy and support him/her, in the hope that he/she works out what is happening and take the step to correct it.
Thanks, Borsia, you seem to know very well what we are talking about here, perhaps you might have been in this situation yourself; you see, my concerns here is that I wish I could prevent this person to get really in trouble, but I am not able to make him see that he needs to see a professional.
Thanks, connorj, I see what you mean, and there is always lots of things to learn before one can say for certain what can be done, so I will think about it and see if there is any possibility that I can get a professional involved.
Thanks, Sherry Hewins; Yes I agree with you that I need to convince this person to seek help for himself, I have tried that and he hates me for doing it and he has become a bit violent. Now what concerns me most is that he has got a good job and if does anything stupid in his job he is going to lose it and then he will really be in a lot of trouble. Anyhow thanks to you all for your help.