Thanks for your advice. It's good to hear what others think about this behaviour and I wasn't sure how to play it.
I also got it wrong initially by slating the OW and giving her power. Fortunately for me I like to read lots about what I am dealing with and hence found this forum and other very helpful advice from things I have read. I believe that the knowledge I have has givien me huge insight and understanding of where he is.
Now I never mention OW or ask any questions, though it's hard because I am nosy by nature!
He isn't coming to see the kids this week as he is working away. His birthday is on the 5th Dec which he plans to spend away from us. The next time we see him will be when we all meet for the meal on 11th Dec. I am thinking of buying a new outfit for the occasion.
Augtan
Christmas is going to be very difficult all round. Like you my H was always very proactive at Christmas, filling the stockings and putting out the presents and putting up the decorations and house lights. Last year we even went christmas shopping together and I thought we had a lovely time but since he has informed he didn't! He is coming christmas day to be with the kids, but not for lunch. When I think of the season without him it makes me sad.