Mellanie-
I know exactly what you are going through. The hard work is just beginning. My H left in January 04, was having A with woman he works with. From the day he moved out though he said he wasnt ready to throw away our marriage. The truth about everything finally came out in May. We decide to make a go of it and H moved home July 1st. The day he moved home was a let down. He was very quiet and pretty much withdrew. I think it was a combination of not feeling at home anymore, upsetting the OW and a whole new routine. Things were really rocky for the first two months. He was calling OW and checking in with her fairly often. Eventually that has died down and we are getting more and more on sturdy ground. It clearly takes a while for our WAH to get over OW even if its their decision to end it.. Be patient, dont smother him and try to go about daily routines as upbeat and normal as possible. He will come around but you will have to give him some space and remain patient.
Good Luck- we are cheering for you