He glanced up as Tywin left the table, and quietly watched him walk away. The right thing for him to do might have been to go after the old man. But he didn't think his father wanted to be disturbed by their company any more than he already was.
Cersei, though, took the initiative, so Jaime stayed behind with Tyrion. Out of all of them, Tyrion was the only one who seemed to have an appetite tonight.
With the two of them gone, Jaime could just be Jaime around Tyrion, and not Jaime Lannister.
"I'm starting to think the stick up father's ass goes an inch in deeper with every passing year."