2T - whatever decisions you make, my hat is off to you. (It always has been!) You have stood not just once but twice; that is amazing! You have tremendous loyalty within you.
I have no further advice to add to what has already been given. None of us here can believe something like this could happen to someone to whom we once entrusted so much of ourselves. It is sad to see someone your h's age applying all of these 'methods' within his life. All you can do is make the best choices for you. And thank goodness you have the ability and wits to do that in a logical fashion. We all see the alternatives and they are quite ugly.
I just think you, certainly, can hold your head up high.
Enjoy the R & R.
Me 41, H 47, M 15 yrs, S11, S13 BD 1: 11/4/14 we work on it; really I pretzel myself BD 2: 3/31/15 H goes down to "dorm room" 8/15: H back to MBR 10/15: H back in dorm room 1/18: H files, now divorced