By Rebecca Silverstein
This year, we saw some new couples get together (hello, Haylor!), but we also saw a bunch of them split. Get the stories behind Hollywood's biggest breakups of 2012.
Tom Cruise and Katie Holmes
Katie shocked the world when she filed for divorce in June. But perhaps no one was more surprised than her hubby of five years, Tom, who never saw it coming.
BING: Who has primary custody of their daughter, Suri?
FIND: Find out who helped Katie plan the swift split
SEARCH: See pictures of the couple in happier times
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