Please Gmum, listen to Cherry, she is right. Even if we all have our part in the break down of our marriage as my IC said it takes two to make it work. Like you my H is gone and lives with OW. For a long time I blamed myself but I realised that even if I wasn't fully happy I DIDN'T CHOSE to cheat he did. It's only 9 months down the line that I didn't push him to have an A.
I know it's really hard but I just read and interesting post from Zeus on Inpain blog. Basically BD is changing ourselves as if it's over, H gone and finalising D. It really spoke to me today and my H text message regarding Xmas Day tomorrow didn't affect me as much as i thought.
It's hard but put yourself first. I have ups and down but overall I'm feeling happier. Please hang in there :-)