I agree with others that this might not be the end. I think when you actually separate things he might have a rethink. However you need to look after you and not think about H or second guess him. This is time to do what you and your children need.
You have given your H a wonderful W and family and M. It hurts that they can be so blind. As he has done this before maybe it will have to go through the separation and D before he may see the light.
I imagine a lot of his unhappiness is guilt. He may think that doing this makes him 'honest' again and will remove that guilt but sooner or later he will realise that OW is making him feel bad. He has to live with what he has done and the consequences. Although you live with that too you can hold your head up high. You KNOW you have support from your family, his family, friends and the community. Your H will feel isolated. This will not go away. He cannot run from the shame of what he has done. You have no shame.
Penny, I wish I could give you a real hug too.
(((((((HUGS)))))))) Saffie
Saffie me 46 H 46 M in 1986 D20,D18,S16,D13 H's A 01/05 to 07/06 H recommitted to M 07/06 renewed vows 09/06 Going from strength to strength