Alanis Morissette's 1995 single "You Oughta Know" is one of music's greatest breakup songs. Morissette rips into her ex in the song, accusing him of cheating, lying and more. The tune, which instantly became an anthem for scorned lovers, is reportedly about Morissette's ex-boyfriend, former "Full House" actor Dave Coulier. —XFINITY Entertainment Staff (Photo by Jason Kempin/Getty Images)
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