Trivia / Only Once

• Dyeing for Your Art: Jacque Gray, who plays Kellie's sister Tiffany, has naturally straight blond hair, but for this film she has curly brown hair.
• Edited for Syndication: The director released a version which removed some references to Mormon cultural practices to release to a general Christian audience.
• What Could Have Been: The director says they originally ended the movie by saying Greg and Kellie got married three years later, but they opted to just showing how many adolescents get pregnant in the United States each year.