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The working title of this film was The Love Maniac. The film opens with the following written acknowledgment: "Twentieth Century-Fox wishes to thank the Department of Defense and the United States Army for their assistance in the production of this motion picture." According to a March 1959 Hollywood Reporter news item, Sheree North was initially cast as "Katey Mulligan," but had to withdraw from the part when she became pregnant. A Private's Affair marked the screen debut of Bob Denver (1935-2005), who was billed as "Robert Denver" in the film. Denver became best known for his starring role as "Gilligan" on the popular 1960s television series Gilligan's Island.