Pistorius' ex-girlfriend testifies Olympian was unfaithful

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Oscar Pistorius' ex-girlfriend Samantha Taylor testified in court that their relationship ended because he cheated on her with Reeva Steenkamp, the woman he shot and killed. She also said that Pistorius always carried a gun and would have it next to his bed while he slept. CBS News contributor Debora Patta reports in South Africa.

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