04/27/2012 05:44 pm ET

Leaving A Spouse Behind. For Good.

WHEN the performance artist Marina Abramovic separated from her longtime partner, Ulay, in 1988, they decided to honor the occasion with a ritual. She traveled to one end of the Great Wall of China, he to the other, and after a 90-day hike, they met in the middle, embraced and officially parted ways.

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