Looks like there might be a new couple hitting the Hollywood scene: Amanda Seyfried and Ryan Phillippe were spotted chatting and laughing together on Saturday night, PEOPLE reports.

The 'MacGruber' actor and 'Letters to Juliet' actress were seen spending some time together this past weekend at Kate Hudson's annual Halloween party at her Pacific Palisades home. An eyewitness says the couple "spent hours talking and even left the party together in Ryan's car."

The source added, "Ryan seemed very interested in Amanda and was following her around the party. She seemed flattered enough to leave the party with him."

Their costumes? Phillippe, 36, was all decked out as 'Star Wars' character Obi-Wan Kenobi while Seyfried, 25, dressed up as a dog.