MC, I always reccomend a four point script to everyone during intervention phase and to keep repeating that...
ONE Of the points IS that you WANT to save the marriage and invite him to go to family therapy...
THAT should be a message sent regularly... but NOT anything ELSE.. no casual conversations or drive by's...
I don't think you should be "talking" aobut it.. etiher he agrees to explore reconcilliation, or you shut him OUT...
he has to make a clear commitment to do teh WORK... period.. otherwise he's just USING you
If he wants to talk, he talks to a family therapist who is trained to handle these things... you and ow are too involved to be able to help this on your own