Spencer and Brody Breakup!

After a ten-year relationship that included creating a reality show (FOX's The Princes of Malibu), partying like young Hollywood royalty and lobbying their way onto MTV's The Hills, reality stars Spencer Pratt and Brody Jenner have broken off their friendship.

Sources confirm that the rift began shortly after Pratt made inflammatory comments about Brody's ex Nicole Richie in a Details magazine story earlier this year, and the break was cemented about a month ago when Pratt was angered by Jenner rekindling a frienship with arch-enemy Lauren Conrad.

Much like he famously did to girlfriend Heidi Montag in last season's The Hills, Pratt gave Jenner an ultimatum: to pick between him and Lauren Conrad. Jenner, sources confirm, chose Conrad and has been filming with Conrad over the last several weeks. 'Brody's doing his own thing with his friends, including Lauren, and Spencer is doing his own thing with Heidi,' a source tells Us.

Jenner, who Usmagazine.com first reported underwent surgery Monday morning to repair a broken finger he suffered last week while playing beach football with Conrad and pals, couldn't be reached for comment. But when contacted by Us late Monday night, Pratt confirmed the split, saying: I wish them both the best. They [Conrad and Jenner] are meant for each other.'

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