I've heard that some people are wondering if Arthur may already know that Merlin has magic or is suspicious that he may have magic.
Like in Arthur's Bane Part 1 and Part 2, Merlin does magic right in front of Arthur a couple of times and surely Arthur must have heard/seen something and with Merlin revealing his magic to Uther in the last episode, maybe Arthur had heard something?
Maybe Arthur's waiting for Merlin to reveal his magic, to have more trust in him? Or maybe he wants Merlin to stay his servant and, knowing that when Merlin's magic goes public, he probably cant be just his servant anymore.
What do people think about this?