Emily Blunt has a new leading man!

Four months after splitting from Canadian crooner Michael Bublé, the Devil Wears Prada star has been quietly seeing John Krasinski, the hottie on The Office!

The couple spent some quality time together on Nov. 9, kicking back at San Ysidro Ranch in Santa Barbara, Calif. “They ordered room service, took long walks and spent every second together,” says an insider. “John really cares for Emily — he totally fawns over her. And she’s loving the attention. She’s a down-to-earth girl, but it’s nice to be treated so well.”

John was last linked to his Office costar Rashida Jones.

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