He moved his head up, embarrassed at his presumption, and said nothing, but nodded to her. His feet felt like lead in that moment, and his disappointment was acute as was his mixed confusion and doubt. Maybe he had misread everything, but he thought she had liked him. He thought she had liked dancing with him, and there was that moment when it had felt so natural to move to her, drawn to her.
But even as he followed her to the Floo, he found himself internally chastising himself, for misinterpreting her signals and making there be more there than what he'd thought. He knew he'd been reckless and bold to do such a thing but it had felt like the right moment, and now he was doubting that she really liked him, at least in that kind of way. Maybe she was humoring him, and was more interested in just staying friends? This notion seemed the best fit to him as he waited for her step into the Floo, ready to follow behind her. He'd wanted to catch up with her, not necessarily make a play for her. Now, he felt embarrassed and awkward.