there could be a great possibility of that, too. there's a chance the doctor worked for the sick institution and shavonne is one of their test subject--maybe to create more people like lewellyn--but when executed, the result was different with what being expected. so now he has to disguise and play along the role of a friend, because monitoring shavonne could be easier this way
i mean lewellyn used to believe he was a dog, right? that sick institution wants to create submissive human that would only obey them, that's why he was put into 'training'. he might be an orphan or neglected kid from broken household that sell him since baby :( ((alexa play some sad onion songs rn))
when lewellyn licked shavonne's fingers, the sexual tension went through the roof omg
also i want to drop some theories of mine so beware the chance of spoiler alert
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i think the corpse lewellyn kept in his house when they have had first dinner together has correlation with their past in prison. maybe he's a person that sent by wards to drag either lewellyn nor shavonne back to that place. because if what they did in that prison leaked to the mass, people would accuse the tops--if it happened the government was behind it. did lewellyn kill people out of his pure desire? i doubt that
"if i want to kill people as i want, i'd also hug and kiss you when i want to." remember this line? so serial killing lewellyn committed might have reason and that reason is to save shavonne. why the murders always happen around ira street? because those people might has located their living place and tried to capture them
shavonne's doctor friend somewhat is a key for all this mysteries. he befriended shavonne not for nothing but to get informations. maybe shavonne has gone crazy and he's supposed to be a patient in mental hospital? or turns out he was the one who's responsible to the serial murder--but he did it without realizing? and lewellyn didn't want shavonne getting captured, so he always stalking him, checking all mails that he received, because he's worried if those people deceived shavonne with the name of publishers
lewellyn been knew that shavonne's exes were people that getting paid for being his contract lovers. but those exes ended up falling in love so they couldn't stay too long and the last one decided to take revenge because shavonne wounded his pride