"Dont tell me ur my heartbreaker" singed justin while he was the heartbreaker. Meet justin . yess THE justin bieber. At age 19 he's singing a song about being heartbroken while he was the actaul heartbreaker.meet cassidy .justins "heartbreaker". Justin and cassidy were dating for a couple of years but once cassidy found out that justin cheated on her and with who?? Selena gomez!!! Justin and selena then broke up and then he started to think of cassidy. The girl that he left broken and felt guilty.the girl he loved and left for some other girl who just wants him for attention and money. ( No hate on selena ) .While cassidy is no longer the heartbroken girl that justin left but now she's the heartbreaker. Cassidy's a model and a girl everyone wants to be with. She still that heartbroken girl justin left just under a mask (not literly). One day justin and cassidy bump into each other while in LA. this time cassidy is just looking for revenge , so she starts to flirt. but cassidy's plan's doesnt go as plan , when the heartbreaker is falling in love, But will this time will cassidy still be looking for revenge or be justin's lover???