In Nous ne vieillirons pas ensemble (1972), Jean struggles, sometimes violently, with his mistress Catherine, all the while keeping his wife at arm’s length. When his manipulative ways become too much for Catherine, she absconds to her parents’ house for comfort and Jean’s true colors come out to play. This is an ironic and at times heartbreaking look at the complications of infidelity. Marlène Jobert is exquisite as the mistress.