Shattered Mirror

Sarah Vida is a witch and a vampire hunter -- and a loner. Christopher Ravena is a vampire trying to pass as a normal high school student who wants to know Sarah better. Drawn to him despite her better judgment, Sarah's forced to admit that there's room for gray in her otherwise black-and-white world of good versus evil -- until she meets Nikolas, Christopher's twin and one of the most hunted vampires in history.

"From the Hardcover edition.

To the casual observer, Christopher Ravena and Sarah Vida look like normal high school students. But he's a vampire who has sworn off human blood, and she's a witch, a daughter of the most powerful vampire-hunting dynasty in history. Slowly, without meaning to, Sarah finds herself won over by his sensitivity, his gentleness, his kindness.
But his past and her future collide when they both get tangled up with Nikolas, one of the most reviled vampires ever.