Gluttony (Seven Deadly Sins) by January Rayne

A Wildes witch cursed me for the massacre my coven was responsible for. I can only drink the blood of the descendants my coven murdered because of bloodlust. Even on the brink of death, I cannot die. I wish for death. I hope for it. And then my beloved finally appears, and he is the very last descendant of the family my own kind killed. His forgiveness will be hard to earn, but his blood? That will be near impossible to get.