Thanks you guys!
I have never judged him about it and I have expressed that if there is anything I can do just let me know.
I know what is causing them (the death of a loved one in 2004), but he never talks about it to anyone.
So, basically I should just keep my distance as to not aggrivate the problem. I just feel like there is something I can do, but since I have no idea of what is going on in his head I can't do anything.
Thanks GC peeps