Spoilers ahead for Season 2, episode 6 of “House of the Dragon.” In this week’s episode of the “Game of Thrones” spinoff show “House of the Dragon,” Rhaenyra Targaryen (Emma D’Arcy) shares a steamy kiss with another woman: her advisor, Mysaria (Sonoya Mizuno). This is a big deal because Rhaenyra is still married, so she’s cheating on her husband, Daemon (Matt Smith), who is also her uncle. To make matters more complicated, Mysaria is Daemon’s ex.