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Dahvi Shira and Jennifer Garcia
January 12, 2012 08:10 AM

Just after Jennifer Aniston and Justin Theroux returned from 10 days together in Telluride, they got back to the business they love most: movies.

The Wanderlust costars, who have been romantically linked since May, attended Monday’s HBO screening of Paradise Lost 3: Purgatory.

The couple flanked Jason Baldwin, director Joe Berlinger and fellow actor Orlando Bloom for a photo at L.A.’s Ray Kurtzman Theater, within the Creative Artists Agency.

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“They were very sweet and social as always. They’re really comfortable with each other,” an onlooker tells PEOPLE. “Seemed like just another night on the town.”

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