The Truth about Cheating: Why Men Stray and What You Can Do to Prevent It (Hardcover) by Gary Neuman this a great book that give some really good advice why men cheat!!!!
Cheating Men Confess: What Sort of Marital
Dissatisfaction Contributed to My Infidelity?
48%—Primarily emotional dissatisfaction
32%—Equal emotional and sexual dissatisfaction
12%—Other/no dissatisfaction
8%—Primarily sexual dissatisfaction
Overall:
59%—Dissatisfaction in marriage was emotional
29%—Dissatisfaction in marriage was sexual