He knows what he has done has been very wrong and he will live with that the rest of his life. My H has told me several times this year that what he has done is so painful and no one could ever know the pain he is talking about unless they have done what he has done. It is all internal--the pain.
For yours and the kids sakes, you could still be nice, keep your distance and do what it is you say you are going to do (file).
The Bomb: 08/05 H moves out: 06/2006 H moves back: 01/07 & Out again: 01/07 H moves back: 03/08 & Out again: 04/08 H moves back: 05/09 & Out again: 07/09 Divorced 08-12 Kids: 22, 20, 19