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  ====Season 7====
  Despite his discomfort at the circumstances leading to Cersei's coronation, Jaime remains loyal to his sister, with Daenerys Targaryen and her forces sailing on Westeros. Cersei agrees to marry Euron Greyjoy after the war against Daenerys is won, but continues her relationship with Jaime, no longer attempting to hide their intimacy from their servants. Jaime negotiates with Randyll Tarly to pledge allegiance to the Lannisters; with the help of House Tarly's forces he leads the Lannister army to defeat the Tyrell army at Highgarden, following Olenna Tyrell's defection to Daenerys, following Cersei's role in the death of the other Tyrells. In the aftermath of the battle, Jaime allows Olenna a painless suicide-via-poison, rather than the torturous death Cersei had ordered. Before dying, Olenna reveals she was responsible for poisoning Joffrey.
  As the Lannister forces return to King's Landing, they are attacked by Daenerys, with her horde of Dothraki and her dragon, Drogon. The Lannisters & Tarly army is nearly decimated by dragon-fire strafings, until Bronn wounds Drogon with a scorpion ballista. Jaime attempts a desperate, horseback lance charge on the dismounted Daenerys, escaping a fiery immolation only by Bronn's perfectly-timed intervention. The two men plunge into the Blackwater Rush, and are carried downstream, away from the carnage of Daenrys' victory. They return to King's Landing, where Jamie warns Cersei of certain doom, should Daenerys escalate the conflict. Cersei is not entirely convinced of that or Olenna's confession.
  Bronn takes Jaime to the Red Keep cellars under the pretense of more training; however, Tyrion (now Hand to Daenerys) is there for a parley. Tyrion wants a truce and alliance against the White Walkers, as well as a meeting between Daenerys and Cersei to present evidence of the danger. Jaime is convinced by Tyrion and relays the message to Cersei, who is skeptical, but remains adamant that the Lannisters will prevail against any foe. She also reveals that she is pregnant with Jaime's child.
  At the meeting, Jon and the Hound present an undead wight to Cersei's court, and Jamie realizes the impending doom. After some persuasion from Tyrion, Cersei relents to sending the Lannister forces north against the army of the dead. Ultimately however Jamie must go north alone, as Cersei had no intention  of intervening until one army – dead or living – was defeated (both unaware or disregarding how the wights increase their numbers). Jamie's departure is contentious, as he ignores Cersei's hollow threat to have The Mountain stop him.