Game of Thrones’ showrunners think Sansa is a master manipulator

Spoilers ahead for Game of Thrones, season 8, episode 4, “The Last of the Starks.”
In the lull after the giant ice-zombie battle of the Game of Thrones episode “The Long Night,” Jon Snow makes a significant decision. In “The Last of the Starks,” he decides to entrust the secret of his identity as a lost Targaryen heir to his sisters, Sansa and Arya Stark. He innocently believes that if they swear they won’t tell a soul, his secret will be safe with them