Meet Me At The Gates

Elliot has been hunting humans all his life, stopping at nothing to satisfy his hunger. Many try to hunt and stop him but fail, resulting in their demises. He's a shadowstalker, a being that takes the form of a human to deceive and devour them in the end. His kind founded the Earth, but now the humans run it, they've driven them out and caused a decrease in their population, resulting in an eternal grudge that feeds his endeavor for vengeance.
He meets Alex, a shadowhunter, he hunts them and tries to keep the world at peace. They meet at inconvenient times, Elliot wanting to eat Alex, and Alex wanting to slay Elliot. But Elliot can't deny that there was nothing there. He has to decide between the status quo or the possibility of love. And he has to sort out his feelings before they get him killed.