Lover Eternal (Black Dagger Brotherhood, Book 2) by J.R. Ward
The Vampire World; in the shadows of the night in Caldwell, New York, deadly war wages between the vampires and their slayers. The secret band of brothers must be feared and above all, the deadly beast Rhage, the most dangerous of all the Black Dagger Brotherhood.
Rhage’s world is dark and he is truly a beast as they refer to him. He is strong, quick, and is the most voracious driven by an inner curse cast by the Scribe Virgin. At one event, Rhage meets Mary Luce, a living survivor of unknowingly thrown into a den of vampires.
With her own curse, Rhage protects the Mary, but she isn’t looking for love. When the inner animal of Rhage unfolds, Mary is attracted to him. As the enemies advance, Rhage must fight to make Mary his own.