He Loved Her, But Used Me

Lysandra, the female protagonist, possesses the ability of immortality, yet she is deeply hurt in love. She is madly in love with Graham, but she is merely a substitute in his heart for his dream girl, Cynthia. In order to save Cynthia, Graham forces Lysandra to confront a serial killer and even goes so far as to threaten her mother's keepsake. Heartbroken and disillusioned, Lysandra decides to deactivate her immortality power and leave Graham for good.