Infidelity is one of the most destructive and common crises that couples face. Previous surveys indicate that 21% of men and 11% of women will engage in sexual infidelity during their lifetime, and evidence suggests that these rates are rising and the gender gap is narrowing

(Lauman, Gagnon, Michael, & Michaels, 1994).

Considering the profound betrayal of trust and the relationship trauma that infidelity typically produces, it is no wonder that
couple therapists report infidelity as one of the most difficult relationship problems to treat

(Whisman, Dixon, & Johnson, 1997).