It's Not Just You, Murray! (1964)
Oblivious to the truth, Murray, a small-time criminal, credits his best friend Joe with his success, even though Joe exploits him and is having an affair with his wife.
Director: Martin Scorsese
Cast: Ira Rubin (Murray), Andrea Martin (wife), Sam De Fazio (Joe), Robert Uricola (singer), Catherine Scorsese (mother), Victor Magnotta, Richard Sweeton, Mardik Martin, John Bivona, Bernard Weisberger