You're Hurting Me From Inside Of My Head- Nathan Sykes vampire fanfic

Lili and Nathan have been best friends since birth, they were inseparable. One day, Nathan was acting differently, distancing himself from her and then he left to join a boy band. 6 months later and Lili had had enough because Nathan had not said a word since he left so she went to go see him. But what happens when Nathan has turned into something she did not expect? Lili is suddenly forced into a world she never knew existed and when her life is threatened, Nathan vows to do whatever it takes to save her even if it means sacrificing himself... Will they both make it out unscathed or will their problems just multiply? P.S if the cover doesn't make you want to read just so you can look at it then I don't know what will...