I wish the man manwha was as throughout as the novel but he had a "sudden" change of heart because he falls in love with the ML. He obviously hated him at the beginning but the more the ML showed tiny crumbs of affection, MC's abandonment issues kicked in and he got more and more attached to him. He learned to bear and even like what they were doing because no matter how awful he was hurt, he knew the ML would be sweet to him at the end and he wouldn't be alone anymore. When they had that huge argument, the MC brought up that the nature of their relationship is abusive just so he could have leverage against the ML and manipulating him into staying with the MC. I really recommend you read the novel instead cuz it's soooo much more complete. Here it feels like some of the characters just do shit without reason and it's because the manwha is missing the inner dialog that they have in the novel
I feel like i need to reread it so i can understand them. After the last conversation they had about their relationship I got confused from the bottom, he’s confusing me! Ugh I don’t know it’s frustrating and depressing.
The top changed from casual hookup(?) to ah I think I like him and I’m interested in him, I could see the changes in him somehow, his relationship like a more mature way. But the bottom I understood him at first until the last conversation I got lost there and starting to think I missed something.