When W and I reconciled, the process of breaking it off with OM (and allowing me to verify it) was critical to any hope of re-establishing trust. Without that process, there would be no basis for it. In my case, I set steps and a time frame. Stop answering his calls/texts - now (verified by her phone records). Have him get his things and don't be alone when he comes to get them (by X date). You get the idea.
I hope he is genuine in what he says to you, but his history invites doubt. Trust but verify. And if he fails, no matter what the reason he gives as an excuse, re-evaluate your path with a VERY critical eye. It is HIS responsibility to establish a foundation on which you might have any hope of rebuilding a R with you.
Praying for you.
Me45 W35 M6 T8 D16 SD11 D0 Dec 07: Bomb July 08: Busted! Thread