Guys I think he remembered the past because he gave the the brooch which was the last thing he had of her before she died...and he said "I am not a knight" in which it was a reference to the statement to his past life when he foolishly believed in the dream of being a knight but was wrong and gave it all up when he wanted to idk burn the world for her? Betraying his knightly code in order to either avenge or be with her