Mach1 put a brilliant post on this thread earlier up about what to say using "relationship Judo". In short, you just agree with them. "Yes, we don't know what will happen" "Yes, I understand that you are done and are ready to move on". If they think you heard them they won't keep repeating it.
Married 18, Together 20, Now Divorced M: 48, W: 50, D: 18, S: 16, D: 12 Bomb Dropped (EA, D): 7/13/11 Start Reconcile: 8/15/11 Bomb Dropped (EA, D): 5/1/2014 (Divorced) In a New Relationship: 3/2015
