"I said, 'What are you doing here?'" Lopez said Friday. "And he sort of [pointed] toward Taylor."
A witness at the rehearsal, whose name was not reported, 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. "The whole crew was really surprised."