Best of 2011

Over and Out! The Year's Biggest Breakups

From Ashton & Demi to Arnold & Maria, 2011 was the end of the road for these star couples

KEIRA & RUPERT

Matching chiseled cheekbones and British accents weren't enough to keep long-term lovers Keira Knightley and Rupert Friend together. Distance and career "were both considerations," a source told PEOPLE in January, after the Atonement actress quietly broke up with her boyfriend of five years. Knightley has since moved on with new beau, British musician James Righton.