Wife's affair with my good friend next door neighbor

This may be long, please read and advise. My wife of 20 years and 3 wonderful kids got caught having an affair with my next door neighbor and really good friend who was married for 32 years. After many deniles, the truth came out. My wife stated she wanted to repair our marriage. She placed the blame of the affair and all the problems of our marriage at my feet. I was walking around on eggshells for over a year and a half. During this time, things were never the same and my wife grew more distant and downright mean to me. My next door neighbor and his wife seemed to be having issues as well. It seems as if the affair had ripped apart our marriages. Well, after a year and a half, my wife asks for a divorce. Just 2 days later my neighbor puts a for sale sign in his yard and had filed for divorce from his wife of 32 years. He sales his house and moves in to an apartment nearby. His wife moves out of town. My wife stayed in our house with me for 2 more months then, "had to get out", so I knew something was up. I found out where my neighbor had moved and asked my soon to be x wife to please not move in to those apartments. she was very cold and mean and said that she would moe anywhere she wanted. He moved in to his apartment in may. My wife then proceeded to move in to the same apartment complex as he, and only about 50 feet from his apartment in august. Our divorce was final in September. Sure enough come march, just 6 months after our divorce, they are publicly seen dating. She even told our 3 children that she was seeing him.. All along she denied (from since the affair was discovered during our marriage up until she went public), that she was seeing him. I found out that He had told his daughter that they had started seeing each other again in september, the same month our divorce was final, and just 1 month after she moved out of our home. Now in june she announces she is taking him on a 10 day trip to Arizona to see her dad. She didn't take our daughter (age 15), or any of my grown children, just him and her. I am devastated . This affair obviously never ended completely and my wife was willing to destroy our marriage of 20 years and his of 32 years. My 3 children are not happy at all with what thier mother is doing, and I know his family is feeling the same. I cant believe my wife, who we shared everything and started from nothing to having a nice house in a nice neighborhood and 3 wonderful kids and great careers, would do this. He bought property back in march and is building a house there. I found out that during their affair, my wife would have him at my house during our parties and get togethers with friends. She had put me on the couch for 12 weeks under the guise that we were having problems, while all along she was texting him from our bedroom. I could go on and on about the level of deceit, betrayal, and lies. This is not the woman i married, or the woman i had lived with for 21 years. My questions is, Will she snap out of it, or am I just hopefully wishing she would come to her senses?. This has got me so hurt, I feel as if my heart was ripped out and stomped on. She states that she has did nothing wrong and for me to just move on. She has shown no grief of our marriage or our 21 years together at all, while I am a complete mess. Please give me some advice...