Goodbye Again (1961)

What's good for the goose is good for the gander in this drama about Paula (Ingrid Bergman), a successful decorator who gets so tired of her lover Roger's (Yves Montand) endless parade of young mistresses that she begins her own affair with a much younger lawyer (Anthony Perkins). But her happiness is short-lived as her reputation begins to suffer and Roger insinuates himself back into her life.