-They fall on the platonic/qpr breakup side. The two share a body after a supernatural incident, so when they fight it gets extremely messy for both- Arthur controls most of the body’s movement but is blind, while John can see through their eyes but only has limited control over other parts of the body. Usually John narrates what’s in front of them, but when they have a particularly bad fight he’ll leave Arthur to stumble around in the dark or intentionally give him bad information, even when it means both get hurt. Their two most prominent ‘breakups’ (they physically cannot separate but have on occasion fallen out so badly that they refuse to talk to each other) happened in two subsequent seasons of the show. In the first, Arthur and Johns’ tense companionship reached a boiling point when Arthur killed an old woman and John revealed that he killed Arthur’s best friend, so John refused to talk to him and left him to get arrested. In the second, John lied to Arthur and then brought up his dead daughter as leverage in the resulting fight not days after being trusted with that information, leading to their now genuine friendship being fractured again (and them going to jail again, but a much worse one).