She had so much guilt from fucking another man in front of me AND enjoying it so much, she later told me. The guilt drove her to depression and that affected everything in our lives, we worked it out but it was a very difficult 2 years.
I worked on my wife for just over 15 years to get her to try it the first time then after almost divorcing because of it, 2 more long years, then one day she announced that she really wanted to do it.