Lyric discussion by punjab0069 

Cover art for The Thief lyrics by Matthew Thiessen and the Earthquakes

you have to understand that matt thiessen (the lead singer of relient k, if you didn't know) has a certain element of sarcastic nature in almost all serious songs (that don't involve God, that is) so chances are that, although it may have been about a break-up, he's probably writing the song in a sarcastic manner...like he's saying that he really doesn't care.