Captor/Captive Romance Stories?

In film -- you might want to see the bio pic on Patty Hearst (with Natsha Richardson). It handles the syndrome, if not the romance. To a lesser extent there aspects of this type of romance in THE PHANTOM OF THE OPERA and even aspects in THE HUNCHBACK OF NOTRE DAME (as Esmerelda's feelings toward Quasimoto change.) Lastly, there are lots of examples in cheap romance novels between prairie girls held captive by Native Americans.