If your H is sincere about working on the marriage I would make it a condition of that ..that he have no contact with the OW.. if that is not possible a she works with him.. explore a transfer or a new job or even moving to a new state! The analogy is that an affair is like an addiction... you don't expect an alcoholic to work with liquor and remain straight! It is putting your H in constanct temptation to be working with this woman.. Now your H will probably not aagree with you.. feel that you are doubting his word etc... and I can tell you that he is probably sincere in telling you he has broken it off with OW.. the problem is that just like any addicition... it is hard to break the habbit or to overcome the urge to have pleasure... so you could put it to him in such a way that you make it clear that you do not doubt his word.. just that you will feel better if the temptation is not always in front of him.. perhaps that will hit him better.... good luck and I hope it works out!
