Good luck with this. We went to Retrouvaille as well (early Feb. 07), and would also agree that it is a wonderful program. In fact, I would suggest people take it before they get married! Probably not a possibility though.
The Retrouvaille program claims a 70-80% success rate. Unfortunately, my experience falls into the 20-30% unsuccessful rate. We dialogued one time and my stbxW stated that communication is not our problem and again gave me the ILYBNILWY.
Hope you make it to the 70-80% range.
Me: 48 Ex-W: 45 M: Nov '96, together since Oct 93 Bomb: on 10-yr anni - Nov '06 OM Separated: mid-Feb '07 Divorced mid-July '08 One daughter - 28 XW living w/OM