I do think the email was good, positive tone. It seems as though he feels comfortable with you, and I believe that was your first mini-goal, right?
If it were me, I would stall as long as possible in terms of actually trying to sell the house. This is the same thing Jody suggested to me about the living sitch with my H-to buy myself time. You can still go with the estate agents and everything, that will get you time to meet with your H. As Lisa suggested, you might also be able to see whether doing work on the house would then increase the value, potentially meaning more face time with your H.
I'd say that if you can up the level of contact with your H, and make a positive impression every time, you will be in a better position to plant that seed of doubt in his mind.
ITH
Me:34 H:36 M:5 years T: 8 years Bomb: 07/17/08 I want to be separated for 6 months--I don't know what I want the outcome to be S 07/28/08-11/08/08 Living together ~7 months D Possibly busted?!?!!!