Ain't Misbehavin is a 1955 musical film released by Universal-International and starring Rory Calhoun, Piper Laurie, Jack Carson and Mamie Van Doren.
Sarah Hatfield, a young, ambitious nightclub dancer, falls in love with and marries Kenneth Post, the millionaire of her dreams. As she tries to change herself to fit in with the ladies of high society, her husband suspects she is "misbehaving" with lecturer Piermont Rogers. So they divorce and Sarah moves to a remote country lodge. Kenneth meets her there and another argument ensues. Later, however, Sarah overhears Kenneth discussing with Piermont his love for Sarah just the way she is. She sneaks back to her old nightclub, leaving instructions for the lodge master to tell Kenneth where she is. At the club, they get back together and fall in love all over again.