He gave her a smile he tried to make confident, which only managed something near 'coy', before turning and walking off. He gave a though to taking her hand, but that seemed rude, touching a goddess without her permission and
Really, he was overthinking this. Like he did in most stressful situations, he threw himself into his knowledge, pointing out a nearby ancient Chinese vase, and launching into a story about its history. She knew it, he knew. She knew everything, after all. But the words gave him something to focus on, that wasn't his feeling like a teenage girl around her.