Jean Sabin is the love interest of John Groberg in the film The Other Side of Heaven. She is, in fact, his girlfriend, who has to wait for him to return from his mission to Tonga. She is played by Anne Hathaway in the film, who also later did the voice of Jewel in Rio.
Jean Sabin (later Groberg) actually was based on a real person. In fact, the film is based on a true story, as all characters are real, though all are played by actors.