Justin Timberlake - "Cry Me a River" (To Britney Spears)
Justin Timberlake isn't a tit-for-tat kinda guy. At least not in his relationship with fellow former Mickey Mouse Club kid Britney Spears. Britney allegedly cheated on JT, but instead of returning the favor, he aired out her dirty laundry and moved on. Britney went a bit nutty and Justin became an international pop sensation.