The characters of Rose DeWitt Bukater and Jack Dawson are fictional characters created for the 1997 film "Titanic" directed by James Cameron. While the film is loosely based on the real Titanic disaster, the characters and their love story are entirely made up.
There were many real passengers and crew on the Titanic, and their stories are documented in historical records. However, the romantic tale of Rose and Jack is a dramatic invention meant to captivate audiences.