I would probably up being friendly with him, more smiles, show caring, maybe invite him for something that involves kids or family...I don't know...just show him that you enjoy his company...without being too forward....and see how he reacts.
You are right if he is in MLC, splitting up with OW doesn't automatically mean that he is done with it, that will just trigger the next stage. But wouldn't that be nice if the OW was out of the picture....
M53 H54 D17 M33Y T38Y Bomb OW 09/09 OUT 10/09 BACK 11/09 OUT 01/10 WANTS TO R 04/10 BACK with OW 05/10 Wants to Reconcile 05/11 I said NO
