I keep getting Aunt/Older cousin vibes from those two, and it's just wow.

Really? I'd never thought about that before. In some ways I hope it isn't something as mundane as a cousin, although an aunt might be interesting... although I think Morgause might be a bit too young to be Arthur's aunt. I agree that there are sparks flying. That scene was like a family get together, definately. I also agree that Merlin might have picked up on it.

I rewatched the episode earlier. I loved the scene - it's one of the reasons why I had to mention the hair again. ;)