Is Robert Pattinson doing the dirty on Kristen Stewart?

Are those eyes starting to wander, R-Patz?

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Robert Pattinson has been spotted out and about with a girl who is definitely not Kristen Stewart.

The 25-year-old was seen seen leaving a club in LA with Disturbia actress, Sarah Roemer last night, despite his best attempts to hide from the paps.

R-Patz kept his head down as he walked out of the La Poubelle ('The Bin') bar, before making his way to a friend's house in a car with Sarah.

According to the Daily Mail, the pair then made their way to another bar, Soho House, in West Hollywood, before leaving together in another car driven by Sarah.

Sarah Roemer, R-Patz's party pal

We really, really hope Robert isn't straying from Kristen with Sarah! Only a couple of weeks ago, reports emerged that the on-screen and real-life couple had shacked up together in a swanky London pad.

Maybe moving in together wasn't such a good idea?