I am so sorry.....You are in shock and grieving; I would see an attorney (even if he hasn't mentioned divorce); to see what you need to know; even tho he has assured you about finances; you didn't see it coming that he left, so I wouldn't trust him about finances; you need to take care of yourself first.....seeing a therapist for support could be very helpful. I got a divorce and am alone at 73; I had hoped for us to grow old together (like you); life has some real shocks and trauma, so we need to do what is best for us. ..it is understandable that you dread leaving the house.