De profesión, sus labores (1970)

Sinopsis

While Ana and Juan are a happy couple, and satisfied with their eight years of married life, María José and Federico, their best friends, have not achieved the desired balance in their marriage. Ana and Juan's happiness makes their friends nervous. María José and Clara, Ana's "good" friends, will try by all means to make Ana believe that her husband is capable of cheating on her if the opportunity arises.