“True Blood” stars Anna Paquin, 41, and Stephen Moyer, 54, met on HBO’s beloved fantasy horror drama (2008-2014) known for its graphic sex scenes.That made it a little, well, awkward once Moyer (vampire Bill Compton) began directing “True Blood” episodes — and filming sex scenes involving Paquin, who played telepathic waitress Sookie Stackhouse.But the married couple, who live in Manhattan, told The Post that they eventually got used to what could have been an extremely difficult situation.“Steve started directing me when we were on ‘True Blood,'” Paquin said. “And in Season 7, our final season, he directed the season opener, which had Sookie in love with the giant beautiful werewolf Joe Manganiello.“Steve directed us in a rather explicit sex scene,” she said, “so when you ask if it is awkward to shoot a movie with your husband, the bar for awkward is set terribly high in our household, not to mention on that show in general.“Stephen cut his teeth directing [on ‘True Blood’] and by Season 3 or 4, it would be like, ‘Hi honey, who are you f–king on camera today?'”“There was actually a day where we were walking from our trailers, Alex Skarsgard and Anna and another actor, and we were all working in dressing gowns going toward our stages,” Moyer said.