Hi, Gale, and welcome to Psych Central!
I honestly think you married a guy who is tied to his parents' apron strings. The fact that he was still living with them at age 35 says something. They now expect him to be at their beck and call, and he feels obligated.
Alas, unless he makes the effort to cut the strings, then I don't think things will change much.
I suggest you talk to a counselor about your situation. Maybe at least you can vent there. However, I personally suspect it is unrealistic to expect him to change at this point. He wasn't listening during the marriage vows about forsaking all others and to the general principle that you should now come first in his life.
That's my take on it, anyway!