Despite “Twilight” stars Robert Pattinson and Kristen Stewart banning questions about their relationship, the pair is still sneaking off for private moments. Instead of partying with castmates Ashley Greene and Kellan Lutz at the Cinema Society afterparty for “New Moon” at The Box on Thursday night, the couple headed to Avenue. “It was just the two of them and a bodyguard, who was keeping people away,” said one spy. “They were ordering Belvedere vodka and Amstel Light, and were chatting and laughing. They left at 3 a.m.” They missed Natalie Portman, Howard Stern, Ivanka Trump and Taylor Momsen at The Box.

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