Ser Joffrey Lonmouth (Solly McLeod) is the lover of Laenor Velaryon, as we learn in episode five. They intend to carry on their affair after Laenor has wed Rhaenyra. But at the welcome dinner for the wedding festivities, things come to a boiling point. It starts when Joffrey, having figured out that Rhaenyra (Milly Alcock) slept with Ser Criston Cole (Fabien Frankel), goes over to Criston to tease him about their "deep investment" in the union.
We don't see how it starts, but suddenly there's fighting and screaming in the middle of the crush of dancers. Viewers see Criston attacking someone, and soon we realize it's Joffrey. Ser Criston beats Ser Joffrey to death in the middle of the feast, leaving Laenor weeping over his lover's dead body.
