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Norman Reedus, the dangerously-efficient zombie hunter on AMC's "The Walking Dead," is dating his former costar Emily Kinney, according to a new report.

"They had a connection early on in the show," a source told Us Weekly, "but the romance developed recently. They're still pretty guarded about it."

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Although Emily is no longer on the show (spoiler alert!) having been killed off in 2014, she and Norman often stayed in touch through texts and fan conventions. Norman also reportedly often sees his lady's live shows, as she tries to break through as an aspiring singer-songwriter.

"He was one of the first to support her at her concerts when she was still on the show," a source said.

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Despite their age gap -- he's 46, she's 29 -- the new couple seemed to always have a thing for each other.

"She always called him the sweetest guy on the set," the source told the magazine, adding that Norman was among the first to reach out to Emily when it was discovered she was being killed off the show. "Everyone reached out," she told Us Weekly in 2014, "though I remember Norman texted me—he's so sweet."

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Still, though, Emily does have one keepsake from her days playing Beth Greene, so she's never far from the show that made her a household name -- nor is she far from Norman, in theory.

"I'm not as much of a collector as everyone else," she said. "(But) I have this turtle shell Norman gave me that I take everywhere."