I had read your posting a bit earlier and opted to wait and see if anyone else would post w/the same thoughts/opinions as I did...T, I agree w/you 100%.
You are allowing thoughts of the ow to take up space in your mind and she's not even paying rent. You are giving her far too much power....let this go for now. If this reconcillation is going to work, you will need to trust him. If you question him about the ow, it will show that you've not changed at all...
Sit quietly, the answers will reveal themselves when you least expect them to. The past is gone, the present is a gift and you need to focus on today, allow the future to reveal itself when it is ready.