A few weeks ago my (M33) wife (F31) cheated on me while she was away at an work training course. She was drunk and has suffered with depression for the last couple of years. She claims not to remember how it started or much of the actual act, and has had no contact with the other man before or since. She says she deeply regrets her actions and when I ask if there's anything in our relationship that's lacking or that I need to work she says there isn't

She told me about it the same week it happened and has agreed to start therapy and gotten back on her antidepressants. I have decided to stay with her and work things out.

Prior to her cheating we have attended sex parties and swung but always with clear boundaries and rule - the main one being that the other is always present and consents. (Same room swap)

In this vein she has offered me a "free pass" to date and sleep with someone if I choose and also to work harder indulge some of my fantasies such as FFM.

Has anybody here been in a similar situation? What did you do and how did it work out? While I wouldn't mind the opportunity I don't think 'revenge' will help our situation and I don't want her to do things she is uncomfortable with out of guilt. I want our shared sexual experience to enrich both of us equally

I feel betrayed, angry and sad but have decided to work on this in private in order to support her mental health recovery. The worst part is I feel I have lost my best friend and the person I would usually talk to about these things.

Thanks for reading, any help or advice massively Appreciated