I can't believe this is my third thread.
I first posted in December about my H's sulking and silent treatment - I was ready to leave then but then got persuaded to give it another go.
www.mumsnet.com/Talk/relationships/3448545-Confronting-DH-about-his-sulking?msgid=84022238
My second thread is where everyone helped me work through what was going on, helped IRL by individual and joint counselling.
www.mumsnet.com/Talk/relationships/3498886-Confronting-DH-about-his-sulking-part2?msgid=85957683
We have now made a joint decision to separate, and I have found somewhere to live.
I don't regret not leaving in January because I have had time to process a lot of things, confide in friends, and come to understand a lot of things about myself and H.
However, sometimes I think it would have been a lot easier to power my way out of the door whilst still fuelled with a lot of anger.
Right now I am mostly very very sad.
Today seemed like a reasonably good day, H and I managed to discuss childcare arrangements up til the school holidays quite calmly and sensibly.
We each spent time doing fun things with the DC and H is actually encouraging them to get a little excited about the new house and buying new furniture etc.
But I have just been hit by a massive wave of sadness again after overhearing part of a conversation between DC1 and a friend. DC1 was saying that he had no idea at all this was coming and had never seen us argue or fight. 
I was sure they were at least aware of the horrible atmosphere, particularly over the last few months so it's a bit of slap in the face to realise they had no idea at all and this must seem totally incomprehensible to them.