From Bruce Springsteen's erotic anthem to a Johnny Cash lullaby, we're looking at pop's declarations of love that hold very dark, creepy secrets.

Writing the perfect love song is a tricky affair, as lyrics which are supposed to be sweet often slip into an unhealthy devotion that verge on creepy.

In 2005, a song by a complete unknown (to Hollywood) musician from Uruguay won Oscar gold over three songs that Beyoncé ...