User blog comment:Morganaforever/Arthur and Morgana/@comment-4384546-20111230054535

I believe that it was planned for them to be blood related from the beginning simply because thats how it was in the original myth. Arthur and Morgan Le Fey (Thats Morgana in Merlin) were half brother and half sister. I believe Uther either didn't notice the flirting or if he did simply ignored it because it would be suspicious if he forbid his son from looking at a woman that way. Ofcourse if they ever began a relationship he would step in