Sam Trammell and Missy Yager

True Blood actor Sam Trammell and longtime girlfriend Missy Yager are expecting twins, People reports.

Trammell, 40, and Yager, also an actress, met in New York and have been together for eight years.

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Trammell is best known for his role as Sam Merlotte on the HBO vampire series. Yager has appeared on Mad Men and Boston Public.

"The couple is thrilled and excited," a rep for Trammell told the magazine.