Dark Kiss of the Reaper — Kristen Painter

He'll steal her heart, then take her soul... The Angel of Death has a name: Azrael. He also has a purpose - to soothe the souls of the suffering into the peaceful passage of the afterlife. But in his twilight existence, Azrael himself has never known peace or pleasure... Until he meets Sara, the first mortal who can somehow see him in his Reaper form. Charming and spirited despite bearing her own burdens, she intoxicates him with the pleasures of life, even taming his brutal dark side with her fearlessness. But Azrael's new happiness is short-lived when he realizes Sara's health is fading. The bright flame of her life is about to be blown out. And he's to blame.