Moyer, 39, may have two kids from previous relationships, but that won't stop him from having more with his fiancee costar, Paquin, 27.
"Anna's so great with Stephen's kids and seems to love them so much, so she seems like someone who would be very open to having kids with him," Kristin Bauer, who plays Pam on the hit HBO vampire series, tells us. "I wouldn't be surprised."
Read on to find out why Bauer thinks the acting duo makes such a great team off camera, plus some deets on the finale...
"Anna and Stephen laugh a lot," said Bauer, who recently married musician Abri van Straten after dating for just six months. "Stephen acts like a respectful gentleman to her. They seem like they're friends and enjoy the same activities. They live together, they work together every day, and they seem to be inseparable."
As for True Blood scoop, Bauer promises it's going to get even darker than it already is. "The finale is unbelievable!" she said. "It's a true climax. In each of the four worlds, there's a cataclysmic event. All these worlds come together to save Bon Temps."
—Reporting by Dahvi Shira
Can't get enough of True Blood? It's OK, we understand. Check out our TV's Hottest Vampires photo gallery for more of the sexy series.