Jaime also, apparently, is about to become a father for the fourth time. Cersei revealed she's pregnant, although some fans are skeptical. Coster-Waldau, however, feels that Jaime believes her – for now.
"I think he believes her," he says. "She looks happy for the first time in three years. She broke the spell when they embrace and she says, 'Never betray me again.' It's the briefest moment of bliss and then she destroys that and becomes the evil one again. Maybe we'll find out differently in one of the episodes to come, but in that scene, I think he believes her."
Coster-Waldau is currently finishing production on Brian De Palma's upcoming film Domino and doesn't feel that he needs some kind of Game of Thrones exit strategy in place now that the series is coming to an end with the upcoming Season 8.