First let me answer your question to me. How do I do this? Well, I have been at this since August 2005 and you just grow and learn and make mistakes along the way. It really does get easier.
Glam is right about them staying away from the kids--they are ashamed and feel so much guilt. Try putting yourself in his place. Yeah, I don't know how I could face my kids either.
The day I found out about the A, I did not tell the kids but my son knew something was very wrong and I would not tell him, told him he would have to ask his dad.
Sure enough, H came home and S asked him what was wrong with me. H told S that he was having an affair and the first words out of S's mouth was: What the f do you think you are doing? Are you going to get a divorce?
H told him that we would not get a divorce unless I wanted one.
Then H came in and told the girls. I have never seen so much crying in my life from the kids and H was crying like a baby as well.
It was awful but I never want to look back again, especially in 2005 and 2006. It was terrible.
You will get thru this. It takes time, and lots of it.
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