Jack felt his blood start to boil. He had been right! This guy was after Andrew! Was asking him out - and doing it again, right there in front of him.
He was trouble with a capital 'T' and all sorts of other capital letters.
Jack looked at Andrew and spoke of Frank as if he wasn't really there. "Why would you want to go out with him?" he asked. "He's not very good looking. And he's clearly a prat." Okay, Jack was the one acting prattish right then. But he couldn't help it!