The scene where Athur asks if she is ok. She lies and he just knows it. No matter how distant they are, he still knows. Because they are both the loniest people in the Camelot. Arthur forced to grow up too early, always under pressure and always trying to please his father. And Morgana with her powers. Two people who should find solace in each other arms. Instead they are both drifting apart and became so lost that they can't go back. And the way he screams her name when she is dying.