The Kingslayer and the Kingmaker: The future of Jaime's

Edit: the last two words of the post title were supposed to be “character arc.” I got distracted and forgot to finish typing it. Sorry!

The chapter Jaime II of AFfC ends on this ominous note when Jaime and Loras are discussing entries in the White Book:

"The best and the worst." So one of us is like to live in song. "And a few who were a bit of both. Like him." He tapped the page he had been reading.

"They belonged to Criston Cole, who served the first Viserys and the second Aegon." Jaime closed the White Book. "They called him Kingmaker."

Criston Cole, as we know, was wholly dedicated to Princess Rhaenyra until something happened that caused one of them to spurn the other. In either case, it seems Criston saw something in Rhaenyra that he was repulsed by and from then on he was dedicated to Alicent and her children.

In reading F&B, Rhaenyra often reminded me a lot of Cersei. She was ambitious and frustrated by the fact that being a woman meant she was denied many of the rights that Westerosi men had. Additionally, like Cersei, she grew progressively more ruthless and paranoid as time progressed.

Maybe Jaime's focus on Criston's entry in the White Book implies that he sees the parallels between himself and that knight. At this point in AFfC, he finds himself disillusioned with the woman that he loves to the point of unhealthy obsession.

However, I also wonder if this could be subtle foreshadowing by GRRM. Jaime has certainly turned away from Cersei, his implicit refusal to return for her trial shows us that, but he hasn't totally abandoned her cause in favor of someone else's. Is it possible that Jaime will find himself openly supporting the opposition in the near future? This, of course, depends on whether or not you think he's already dead in the hands of the Brotherhood, but I don't think George is finished with him yet.

If Jaime were to go over to someone else, who do you think it would be? Personally, I've always wanted him to end up fulfilling his oath to Catelyn by becoming a knight in Sansa's service, eventually serving her as she becomes either Lady of Winterfell or Queen, but that's just my take. Interested to hear if anyone else think's his ark will continue to parallel the Kingmaker's to some extent.