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"You're disvaluing Charles & Arthur's friendship!!"
I just said that Charles is one of Arthur's many best friends who stayed on his side until the end, and Arthur is one of Charles's small number of friends, to who he trust more than to the others. I never said and even think that their friendship is fake, or that this is an illusion, I'm just saying that Arthur is good and friendly with everyone from the gang(even out of the gang), so that's nothing special that he's finding another friend and help him to join the company and learn to be more communicative/sociable?
That may be special for Charles, who was alone the most part of his life, who don't know what to do in big communities where everyone are tightly knitted and obligated to be friends/be friendly to eachother, but I never said and never will say that "their friendship mean nothing" — No, never ever.
That's you the ones who are saying that "Arthur is Charles's ONLY friend, and Charles is Arthur's best friend while others are his family and siblings." There's nothing special in their friendship to make a lovers out of them.
How could you even come to that? You don't know how a friendship between introvert and ambivert works? Or you just don't want to accept the fact that Arthur is so tired with all this romance and don't need anyone at all, that you're shipping him with some of his random friends?