"Mr. Brightside", The Killers

Jealousy-fueled insomnia set to an irresistible beat, complete with paranoic nightmare scenarios of the lost love with her new boytoy, capped off with disbelief that all this pain could've started with a simple kiss.

If you've never felt this perfectly awful, then you've probably never been in love; if you have, you know that in some sick way the pain of it is as beautiful as this song.