My feelings exactly

My best friend of 20 years and my wife of 8 years all currently work together. I was introduced to my wife by my best friend. My wife and I was going through a tough time, more so then I even knew and she sought emotional comfort in him. This was easy for her since they shared an office. Now keep in mind these are the most trusted people in my life. They chose to have an office affair for at least 4 months. My other coworkers seen him texting her to talking her into cheating and no one said anything to me on such a matter. I probably would have never found out if I did not do something that I never would have dreamed that I would do and go through her cell phone text messages. I confronted her on the issue and he had convinced her to continue to lie about any kind of an affair, until she decided to step forward and tell the truth. Even after her confession he continued to try to keep the lie alive throwing her under the bus, until the lies caught up with him. To me a friendship if 20 years and a marriage of 8 years means something. The hurt and the lies seem unbearable, but the dishonor and disrepect of the marriages, children and work place goes so much deeper. My wife and I are attempting to work through this and rebuild our marriage, but I want nothing more to do with him. Is this a bad thing me wanting him completely out if our lives?