Open Marriage Occurred Unplanned

My wife and I have been married 10 years now. We have a 9 year old son and 8 year old daughter. I cheated on my wife before marriage once and had an affair after marriage. Surprisingly my wife didn’t get very upset with either. I confessed and shared details with her when she ask. Aprox two years ago while cleaning up dinner she quietly told me she gave a coworker a bj. I was so glad when the kids finally went asleep. In bed she also said he went down on her and that was all. We had intense sex and I shot my load from her belly button to her face. She laughed at how much I enjoyed the event. Surprisingly she said they did the same the next day. The next week she was disturbed when I came home. At bed time she shared they went to far and had full sex and he cum inside of her. Luckily she got her monthly 3 days later. We for days had discussions about going forward with this. They used condoms until she got her tubes tided. This all has happened the last two years. My wife trimmed up to her college weight. Every month or so we go out to clubs. I get so aroused watching guys dancing with her and feeling her up. Twice she went to a motel with a partner. We are more active sexually than through the years. I still haven’t been with another partner since my affair. I’m totally satisfied with sex with my wife. My wife says she gets with others mainly because I enjoy it so much. I do know we totally love each other and she said she would stop sex with others anytime I ask her to stop.