Like many songs, this song also could be interpreted various ways. For me, I simply believe it is an ex-love/ex-girlfriend that the song is about. Someone who came back into his life, someone, who he obviously wants nothing to do with anymore. "You made me realize everything I've ever known of love was pain." However, as stated, it could easily be about any one specific person. The bottom line is that the person he's singing to has obviously pissed him off.
Like many songs, this song also could be interpreted various ways. For me, I simply believe it is an ex-love/ex-girlfriend that the song is about. Someone who came back into his life, someone, who he obviously wants nothing to do with anymore. "You made me realize everything I've ever known of love was pain." However, as stated, it could easily be about any one specific person. The bottom line is that the person he's singing to has obviously pissed him off.