"Cool," Danny smiled. "I'll have my congratulations ready."

When Zoe mentioned Cai, Danny stiffened. He so thought he was going to get away with this. "Uhhh, sure," he nodded, because it was rude to say otherwise. "'sfine. Just nervous." Danny was kind of sort of terrified Cai would find out he had cut himself. If Cai blamed himself for that, Danny would feel even worse.