One Hell of a Guy(2000)

When the Devil's favourite demon, Nick (Rob Lowe), is sent to corrupt the soul of Cassie Springer (Alexandra Powers), the last thing he expected was to fall in love. But Cassie's purity was enough to save the town of Fairfield from the Devil's clutches and it might be enough to make this handsome devil... a real life Romeo. Now, the battle between good and evil gets personal.