Some time ago I read a book. Can't remember the title or author. Started out with a girl and a vampire chained on opposite walls of a room in an abandoned house. During daylight, the vampire had to move closer to the girl to stay in the dark. During night, she had to move closer to him to get her food.

The Bad Vampires were trying to force him to feed on her but he wouldn't. Eventually they escaped and became partners hunting for the Bad Vampires. 'Might' have been Charlaine Harris but the titles on her website aren't familar. It was NOT Hamilton's Anita Blake....HELP please!