09/24/2012 12:22 pm ET Updated Dec 06, 2017

Michael C. Hall, Morgan Macgregor Show PDA At Emmys 2012 (PHOTOS)

Well, it appears Michael C. Hall is not getting back together with his ex-wife and "Dexter" costar, Jennifer Carpenter.

The Emmy nominee was spotted cozying up to his new love, book critic Morgan Macgregor, at Sunday night's Emmy Awards and he looks completely smitten.

The actor, 41, held hands with the tattooed blond beauty on the red carpet and reportedly continued the PDA party inside the Nokia Theatre. "They're totally together and cute," an onlooker told Us Weekly of the pair. According to her website, Macgregor "likes public radio, lattes, and doing her makeup in public. She’s working on a novel, and plans to open a bookstore called Dead or Alive."

Hall and his ex Carpenter sparked rumors of a reconciliation earlier this year when they were photographed cuddling during a sunset stroll in Santa Monica, Calif., on Feb. 8. But the former couple, who play brother and sister on "Dexter," are just good friends," an insider told Us Weekly, adding, "Their divorce was the most amicable in the world."

"He is and always will be one of my best friends in the world. Just because the marriage ended doesn't mean the love isn't still there," Jennifer said in October 2011. "We take very good care of each other ... We always have. I'm just really lucky."

"Dexter" returns with its seventh season Sunday, Sept. 30, on Showtime.

michael c hall morgan macgregor