By the Ring, everything is set for Chuck. No more Intersect, no more obstacles, and to boot, ...
Not only did she choose the spy life over him (after this has been building and being encouraged), she's going with Bryce.
Now, other events transpire, they defeat the bad ...
The next thing we know (chronologically) is they're back in Castle, Casey tells him he can be a "real spy," and Sarah asks him to run away with her. He gets 3 weeks at the training facility and then is the ...
I've already given my take of he feels/she feels plus background here, but Chuck tries explaining in the courtyard at the end of Pink Slip. He'd been kicking around "like a loser," and says, "then one day really important ...
They both chose duty, at different times, but they both did. Chuck didn't choose Prague for an exciting spy life; he chose it because at heart, before the Intersect and Sarah, he's a difference-maker - a hero. He just didn't have the opportunity ...
(Finished)