question about exposing the OW

[AntoniaB]

Short version: husband plans to file for divorce because he is in an emotional affair for a month or so that threatened to continue and/or go physical, and I said either he committed to working on us and cut her off or he needed to start divorce proceedings because I won't accept an open marriage or him taking time to "compare" the two of us to make a decision. He said he can't deny he wants to explore his options, so he plans to file. I've exposed his intentions to family and friends, but these are all people on "my side" of the sitch. The OW is not married but was in a long-term live-in relationship. Apparently her ex was as stunned and hurt as I was. But other than that, I don't think that my husband's co-workkers, who are also hers, know or care. What is the point of exposing her to them and how would I do it? Is it worth it?