The American version of the 1975 French film "Cousin, Cousine" that proved to be a big hit in the U.S. Ted Danson and Isabella Rossellini play nice people married to mates Sean Young and William Petersen, who are involved in an affair. To get even, they pretend to become involved physically and find much to their surprise they are truly falling in love. A robust family comedy about fidelity. With Lloyd Bridges and Norma Aleandro.