Q&A Should I Confront my Former Best Friend, the Affair Partner?

Question

My husband's AP was also my best friend. My husband told me about the infidelity that started in October 2013 only three weeks ago. The sexual aspect carried on for three months; on a regular basis, since she was also his receptionist. They did carry on an inappropriate friendship though, and we continued to spend a lot of time with her family. I feel betrayed and played by the two people I trusted the most. She knows that he came clean and I assume is wor...