From Hugh Hefner and Crystal Harris to Jesse James and Kat von D, see who else never made it down the aisle
Selita Ebanks and Nick Cannon
He might be married to Mariah Carey now, but less than two years ago, Cannon popped the question to the Victoria's Secret model in the middle of NYC's Times Square -- with the help of a jumbotron. Five months later, on Oct. 3, 2007, they split to focus on their careers.
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