Fallen - Lauren Kate, Doubleday

What if the person you were meant to be with could never be yours? 17-year-old Lucinda falls in love with a gorgeous, intelligent boy, Daniel, at her new school, the grim, foreboding Sword &, Cross ...only to find out that Daniel is a fallen angel, and that they have spent lifetimes finding and losing one another as good &, evil forces plot to keep them apart. Some angels are destined to fall...