Robert Pattinson Takes High Road In Kristen Stewart Cheating Scandal

Pattinson taped his 'Daily Show' interview with Jon Stewart ... and sources in the studio tell us RPat seemed anxious about answering the inevitable Kristen Stewart-Rupert Sanders affair question.

But Rob refused to rip his ex-gf. When Jon Stewart asked, "How are you doing?" ... Pattinson would only say, "I intend not to say anything."

Jon didn't press further, saying ... "I wish you the best, these things happen when you're young."