He wasn't expecting what he said to upset Kira further, watching him get up with a hurt expression of his own. Aurora gets up with him, but Frank doesn't chase either of them. This isn't Reims, he's not Mayor Dad. They can leave if they don't want to hang out with him and his dumb feelings.

"Jesus Christ, why does it mean so much to you? I'll talk to her, okay. Just--" Stop yelling at him!!!!! Frank stretches his legs back out and lets his head thunk back against the wall. "Thanks for sharing your booze." You're free to go.