Finnick holds back a comment or two about Katniss' trust. She shouldn't trust him - he did lie to her, even if he's not lying now. At least she's not telling her new friends what an awful liar he is, turning them against him just to make his life harder.

"CONDOR wasn't all that bad," he says. "And unless Celestia can read minds, without the Mockingjay's word no one has any reason to trust me."