missherlove, Thankyou for your thoughts. I did set boundaries when he first left. I told him OW was never to see my kids ever, even if they stayed with him overnight.
H has stuck to this. It was difficult as OW was a friend of my daughters (obviously not now). Neither of them wanted to see her again anyway, which has made it a bit easier I guess.
Also the kids have never been to his flat and don't want to go.

It has been so frustrating watching him touch and go. I think even more so because I knew what was happening. I did get my hopes up at first, but after he backed of again I could see that everything I had read was actually true and I had to accept this was going to take a while to come through.
He has tried to break out of the tunnel a few times now and each time he comes a little closer. Last time he was so close to breaking down. I could almost see the tears. Then he just held it together and left. It was hard to see him like that, knowing I could do nothing for him only sit back and let him go.

The NC always comes after a spew. Each time he backs away for a few weeks before coming forward again.
All I can do is ride this one out again.
HUGS