06/08/2011 03:20 pm ET Updated Aug 08, 2011

Bret Lockett: I Have PROOF Kim Kardashian & I Hooked Up

NFL player Bret Lockett says he's not afraid of Kim Kardashian's legal threats -- telling "TMZ Live" he has CONCRETE PROOF the two hooked up while Kim was dating her fiance Kris Humphries.

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