Event: Jon Snow - Act of Betrayal (Political Wins)

Episode 4: The Last of the Starks at 38:17
38:17 (+3) Jon Snow:
Jon breaks his promise to Daenerys, secretly telling Arya and Sansa about his heritage as a Targaryen and heir to the Iron Throne as long as they pinky swore not to tell anyone. (Act of Betrayal)