This to me screams of depression. It's WANTING to WANT to do things, but not actually wanting to do them.
I very much agree and thought the same thing as soon as I read it. He's in a rut - a depressive rut. Of course that may well only be part if the answer but it's where I'd start.
DonH Midwest Me 56 WAW-EXW 55 Met 11/95 / Married 5/00 Bomb 6/20/05 / She Filed on 6/2/06 / Divorced on 10/9/06 4 who'd qualify as GF since D & dated about 25 women since D