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Nikolaj Coster-Waldau Breaks Down That Huge Jaime Moment On 'Game Of Thrones'

Jaime Lannister finally did what everyone's been telling him to do for years.

Warning! Spoilers ahead for “Game of Thrones” Season 7!

During the “Game of Thrones” Season 7 finale, fans witnessed a meetup of all their favorite characters, an incestuous, butt-friendly sex scene and an ice dragon destroying the Wall.

But a lot of attention was centered on another big moment: Jaime Lannister’s decision to leave Cersei and join the Northerners’ fight against the Night King.

He did it, y’all ― Jaime finally realized his sister is crazy.

Actor Nikolaj Coster-Waldau, who’s played Jaime on screen for seven years, was thrilled to know his character used his brain for once and saw right through Cersei’s (Lena Headey) lies. After she meets with Tyrion (Peter Dinklage) following the dragon pit council, everyone assumes Cersei had a change of heart when she reemerges to tell them she will join the fight against the dead and send her army north. Even her dear brother/lover (and the father of her unborn child) falls for it.

But we all know Cersei, and she’s not one to play nice. As Jaime gears up to lead the Lannister troops north, Cersei interrupts to share her true motive: betraying Jon Snow (Kit Harington) and Daenerys (Emilia Clarke) by staying in the South as they face the Great War. Cersei and Euron Greyjoy (Pilou Asbæk) actually plotted to buy an elite mercenary troop of over 20,000 men in Essos called the Golden Company and plan on continuing Cersei’s rule on the Iron Throne.

Jaime was shook, so he decides to finally bite the bullet and say goodbye to his twin. She, of course, threatens to kill him ― as she did with Tyrion earlier on in the episode ― but Jaime somehow escapes with his head after the Mountain doesn’t obey Cersei’s apparent “go for it” signal. (She is definitely, maybe, pissed about that.)

Below, Coster-Waldau discusses Jaime’s big exit from King’s Landing, his hopes to reunite with Bran Stark, and his love of Tormund and Brienne.