I wouldn't say anything, CAmom.
I would chit chat like nothing is unusual. Pleasantly! I would NOT give him any kind of indication that you are hurt or unhappy because that could signal to him that you regret your decision to be strong and you do NOT want him to think that you have waivered at all.
Go back and read the responses in our archives to bolster yourself up again.
Keep the conversation light. No drama.
Suz