All I want in my merthur is Arthur to trust Merlin to toxic lengths and Merlin to never, ever misuse that trust. I want Arthur to be slapped with one hundred evidences against Merlin but not believe in Merlin’s fault because Merlin said he didn’t do it, and he actually didn’t. I want Arthur to not know but know about Merlin’s magic, and Merlin to know that Arthur knows but doesn’t know because he cannot know because Uther is the king. I want Arthur to have absolute faith at all times in Merlin, that Merlin is able to save him and his kingdom, and Merlin being unsure of himself, but never giving up, because he knows that Arthur trusts him, even if he cannot say it, because he doesn’t know, but knows, and Merlin cannot let him down.