Adventures of Don Juan, known in the United Kingdom as The New Adventures of Don Juan, is a 1948 American adventure Technicolor romance film made by Warner Bros. It was directed by Vincent Sherman and produced by Jerry Wald from a screenplay by George Oppenheimer and Harry Kurnitz based on a story by Herbert Dalmas, with uncredited contributions by William Faulkner and Robert Florey. Wikipedia
(last lines) Leporello: Juan! No more romance, huh? Don Juan: My dear friend, there's a little bit of Don Juan in every man, and since I am Don Juan, there must be more of it in me!