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The 55th Annual GRAMMY Awards - Red Carpet

LOS ANGELES, CA - FEBRUARY 10: Singer Katy Perry attends the 55th Annual GRAMMY Awards at STAPLES Center on February 10, 2013 in Los Angeles, California. (Photo by Larry Busacca/WireImage)

Hollywood Heartbreakers

These celebs have plenty of experience in the dating department ... and have left a trail of broken hearts.