If I may say, I believe much of what LJ is going through is not only grief, it is dealing with an irreplaceable loss. He misses the woman who made his life complete, with whom he shared everything for most of his entire adult life. He is having his own problems now with no one to help him, as he helped her. He has to cope and learn to live now without the presence of his lifelong loving companion.
I agree with seeking therapy and maybe a support group, but any way you slice it, he is going through a very bad time.