Have you gotten the book "After the Affair?" I just picked it up yesterday and started it, but even though you are in C, it could help w/ some perspective from the A POV. Just a thought.
And, yes, your W can change -- the coming home negative/stressed/taking it out on you, the not wanting to have sex, etc., etc. -- I did it when H dropped the D bomb and am happier for it. Didn't know what I was missing in my M/R by not putting in the effort it takes.
Me: 38 H: 35 S4, S5, S10 Bomb 01/07 Wanted D - nothing would change his mind Numerous A's prior to D bomb; EA prior/during D bomb Piecing 04/07 Deployed for a year 05/07 Still Piecing 2010 M 11 yrs 05/10