Perhaps... but she knew his name. The chances of randomly guessing someone's name and guessing it right was pretty low, and it seemed she recognized him, so surely she hadn't mistaken him for someone else? Unless he had a twin, but he was pretty sure he didn't.

He only nodded, lifting a hand to wave.
Though he wanted to say he did know her, lying got him nowhere, and she would know. Perhaps with some time, he would remember.

Ol-j-man