Let's Live a Little (1948)
Let's Live a Little is a 1948 American romantic comedy film directed by Richard Wallace and starring Hedy Lamarr and Robert Cummings. Written by Howard Irving Young, Edmund L. Hartmann, Albert J. Cohen, and Jack Harvey, the film is about an overworked advertising executive who is being pursued romantically by his former fiancée, a successful perfume magnate, who is also the ad agency's largest client. While visiting a new client—a psychiatrist and author—to discuss a proposed ad campaign, his life becomes further complicated when the new client turns out to be a beautiful woman, who decides to treat his nervous condition.
More at Wikipedia.