User blog comment:Longlivemerlin/New clip from The Diamond of the Day Part One/@comment-5059229-20121222035344

Oh for God's sake!! If Arthur DOESN'T see Merlin use magic, RIGHT IN FRONT of him, then he is completely and utterly blind! How could he not see that, Merlin's eyes change colour?!?! Is he such a clotpole??

Or maybe, just maybe, he already knows the truth!! Maybe the  magic reveal happened before this scene and he has just accepted Merlin's magical abilities.

And how on earth did they end up like this? Why would they just drink away in the Tavern and get drunk? Well, despite the countless number of lies on Merlin being in the tavern, he NEVER goes there, unless he's looking for Gwaine maybe!!!