Bonded By Blood by Laurie London

Deep within the forests of the Pacific Northwest, two vampire coalitions battle for supremacy—Guardian enforcers who safeguard humanity and Darkbloods who kill like their ancient ancestors.

Now Guardian team leader Dominic Serrano will be forced to choose between the vengeance he craves and the woman he can’t live without…
Movie location scout Mackenzie Foster-Shaw has always known she’s cursed to die young. No one can protect her from the evil that has stalked her family for generations—vampires who crave her rare blood type. Until one afternoon in a wooded cemetery, she encounters an impossibly sexy stranger, a man she must trust with her life.
For Dominic, a man haunted by loss, Mackenzie satisfies a primal hunger that torments him—and the bond they share goes beyond heat, beyond love. She alone can supply the strength he needs to claim his revenge. But in doing so, he could destroy her…