The husband agrees they can have a fifth child — while the wife consents to an infidelity clause allowing him to cheat with other women on a strictly annual basis.

"They agreed to a weekend amnesty, where the guy can do what he wants for just one weekend a year," recalls Johnson, who runs the Dallas, Texas-based goasksuzie.com. "In return, she gets the bigger family she craved."

According to Johnson, such arrangements are increasingly common in her practice as a growing number of women agree to "widen their monogamy boundaries" and embrace a marriage of convenience, where it's just the husband who strays rather than an open marriage where both sides cheat.