Lyric discussion by la-la-la-lana 

Cover art for Stab My Back lyrics by All-American Rejects, The

The song is all about a girl who thought she was completely unsatisfied with a relationship and left the boy. She had a new love but relized that he wasnt what she wanted. The first boys heart was broken but this song is him spiteing her for what she had done to him. It makes complete sense if you understand the message behind the lyrics.