Vampire by Blood by Cyndi Faria

Necromancy isn’t pretty and Vampires aren’t exactly dead.
When a deceased witch informs Tricia McIntyre she’s a fae princess who’s being hunted by an ancient vampire, she turns to her best friend Sergeant Riley Sweetwater. Problem is, he’s buried in the town cemetery, and she hates him for dying on her. Until she uncovers his secret.
Tricia and Riley were never meant to cross paths after he went dark. Especially since he’s experiencing some kind of immortal transition of his own. But they do, and she’s hunting the same vamp responsible for killing his squad.
Forced together, Tricia’s trying not to kill Riley with her uncontrolled Fae powers, while he’s struggling not to drink her dry. As they must battle their love-hate-lust relationship, they search for the one who holds the secrets to saving humankind before a dark supernatural destroys them all.