Harry Styles | One Direction 

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“X Factor” host Mario Lopez said he saw Taylor Swift and One Direction’s Harry Styles hand-in-hand on the set of the show. Swift, 22, recently broke up with Conor Kennedy and could now be dating Styles, 18. Lopez said Styles was on the “X Factor” set Thursday during Swift’s rehearsal for a performance of “State of Grace.” “I said, ‘What are you doing here?’” Lopez said Friday. “And he sort of [pointed] toward Taylor.” A witness at the rehearsal confirmed Lopez’s observation. “He was smiling at her while she rehearsed. When she was done he jumped up on stage, picked her up, put her over his shoulder and carried her off stage,” the onlooker told People magazine. “The whole crew was really surprised.”