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Joe Manganiello, Ryan Kwanten, Sam Trammell, Stephen Moyer

Michael Caulfield/WireImage; Frazer Harrison/Getty Images; Courtesy of Michael Kovac/Wireimage; Jason LaVeris/FilmMagic

One of the stars of True Blood is about to sink his teeth into fatherhood.

And not just regular old fatherhood—this otherworldly hottie is gonna be a proud papa of twins. So which stud is gearing up for daddy duty?

It's Sam Trammell!

The 40-year-old actor and his longtime girlfriend, actress Missy Yager, are expecting the bundle of double trouble later this year.

"The couple is thrilled and excited," a rep for the actor told People.

It'll be the first delivery for both Trammell and Yager, who has appeared on Mad Men and Boston Public, who met eight years ago while working together on Broadway.

Congrats, you two!