I'll post this article for a 3rd time. They could both be telling the truth. She could be telling the truth that she believes in what she remembers and he could be telling the truth that he doesn't remember it at all. Neither is a strong indication of what really did or didn't happen. Corroboration would be helpful in figuring out what really happened, so far there isn't any.
Link: https://apnews.com/4bbe9c74f889442fa969690732e5cc59