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Robert Pattinson on 'Daily Show'; Sheen Back on Twitter

Lara Spencer explains what has people buzzing on the "GAA" Pop News Heat Index.

'Twilight' cheating scandal

Robert Pattinson stuck to his commitments and began making the rounds for new movie "Cosmopolis" this week. Despite plenty of alluding and pointed asking about the "Twilight Saga" stars relationship, Pattinson avoided all talk of and Kristen Stewart's affair with married "Snow White and the Huntsman" director, Rupert Sanders.