Robert Pattinson, Kristen Stewart Arrive Separately for His Movie Premiere

People.Com tells us that Kristen Stewart surprised screaming fans at the Monday night’s Manhattan premiere of her constant companion Robert Pattinson’s new movie, Remember Me.

First, the Twilight heartthrob worked the red carpet, where he posed with his costars,Lost‘s Emilie de Ravin and 11-year-old Ruby Jerins. Then, Stewart arrived, posing for pictures and signing autographs before entering the Paris Theater.

“She looked really happy,” one fan told PEOPLE.

Before flying to New York City on Feb. 26, the private couple spent the week in London, where they attended the BAFTA Awards – and avoided being photographed together. But during their trip, British council member Nicolas Clark Tweeted that he had spotted the pair in a London pub on Feb. 23, sharing “a couple kisses on lips” and “acting like a couple.”

While Stewart has been mum about the relationship, de Ravin told reporters that her steamy love scenes with Pattinson were, “What should I say? Amazing! Amazing, yes!”