Punishing The Unfaithful (USA 1995, Celeste, Anna Malle)

Her husband has been having an affair. When she finds out, she sues him for divorce. His attorney has an interesting bit of extra-marital advice: To sue him from a costly settlement, he suggests hiring a gigolo to do the wife, film it, and offer the tape as evidence that the woman is being just as unfaithful as the man ...