My DH told me last weekend that he had found someone. This someone started out as a professional relationship, which turned personal (DH said he made it personal). DH was telling OW about our marriage problems (last 5 years of anger, threats of divorce, not wanting to be in this marriage any longer). She herself is a divorcee with a child. She is also 15 years younger than DH. He said that he thought it was okay as we had discussed 'friends of benefits' (flirting with this idea of a poly-amorous relationship when we were in bed and talked about how we could overcome both our sadness about drifting apart).
I'm okay with an open marriage/relationship but was really wanting to get something in writing about rules and boundaries before either of us embarked on finding another person. I wanted our relationship to be open and honest. However, him and the OW doing it for most of 2023 behind my back is not being open and honest. DH says he thought that what he was doing was okay as we'd discussed open marriage. He's said sorry for doing it in the wrong order - telling me after he's found the one (to conduct the open relationship with).
DH wants to continue seeing her as he feels that she makes him happy and calm.
Sleepness nights and tearful thoughts on my part, we went for couples therapy yesterday. We've also discussed putting together an Open Marriage / Relationship Agreement with rules and boundaries. The OW would see the Agreement and sign if if she is happy with it. If she is not happy then she would make comments, which would be considered and reviewed.
DH and I still love and care for each other, which is why we're doing therapy and pursuing this Open Marriage route.
I want to be happy; I want DH to be happy; and I want both DH and myself to be happy together. I don't know the OW's intentions in her staying in the relationship with my DH. DH has already told her that I and our children are his main priority. The OW said she is okay with the arrangement. I think DH pays for most things when they're together.
What are others thoughts on this situation?