Arthur And Morgana :Love Conquers All

So basically they both fall in love and are about to get married and then Arthur kills someone and Morgana is outraged and calls off the wedding but as she is about to leave the wind blows the door shut and she falls to her death. Arthur and Uther are there when she dies and after Uther tells Someone that Morgana is his daughter. Uther and Arther are so upset but Arthur never knows that Morgana was his Half sister.