Lucy - I'm also interested to hear what's the best thing to do here, should you be in for H coming round, make small talk and be light and breezy or not be there at all.
In my case, I find it easier not to see H at all, he makes me nervous and although I try to act as if I'm confident and happy, I'm not sure if he can see through it. I also wonder if acting this way makes him believe I've accepted his choices and if it makes things easier for him.
It's so difficult. Good luck!
Me - 44 Husband - 47 D20, S18 BD - Aug 2013 Moved out - Jan 2014 OW discovered Jan 2014