Hi Bompilsf,

Although I am not a doctor or medical professional of any kind, it "seems" like it may be possible that your friend may be suffering from some kind of mental illness or psychological problem. Of course I could be quite wrong about that.

You might want to contact a medical professional on behalf of your friend. In that way you would get professional advice that might prove helpful to you.

Your friend is lucky to have you in his life.

All the best to you! -- Yaowen