Wasn't he already in love with ml when he slept with second ml one last time and played both of their feelings for the sake of what? I'm calling that part toxic. It’s okay to admit that his character is not completely perfect right? Three main characters have their own flaws and it's okay. You can still like them.
Nope, in chapter 79, when he slept with the second ML, he was still unsure about his feelings for Ho-in, but Chunwoo kept thinking about Ho-in was waiting for him . It’s after he slept with the second ML and ran back to Ho-in that he realized he fully loves him now. Chunwoo also never played with Ho-in, as he told him from the start that he had feelings for the second male lead, and even if Ho-in waited for him, it was not a guarantee that Chunwoo would choose him. Ho-in agreed to all of this, and as for the second ML, he already told Chunwoo in chapter 31 that it did not matter to him if Chunwoo slept with someone else. So, as you can see, Chunwoo never played anyone, nor was he ever toxic.
Well, I don’t really care if Ho-in is okay with all of this, but from the reader’s point of view, we already know Chunwoo is already falling for Ho-in, and he still went and slept with the second ml so that part ick me out. Chunwoo himself knows he messed up for that and apologized to Ho-in. So do you really think he didn’t do anything wrong here or what?
You don't care if Ho-in is okay with all of this, yet you said Chunwoo was playing with Ho-in and the second ML's feelings. Now that I showed evidence that neither of them care, you are dismissing that. Chunwoo fully fell in love with Ho-in in chapter 95 that's the first time Chunwoo said, "I love you" back. Up till then, Chunwoo still had feelings for the second ML, even if he came back to Ho-in, which is why in chapter 89 Ho-in tells Chunwoo he will not insist on him loving him back right away, but he needs to give his full heart to him and say, "I love you," which Chunwoo finally does in chapter 95 when he comes to terms with his feelings. If you were reading from the reader's point of view, you would not have missed all this evidence, but you did and also dismissed it, which shows you are just preaching your opinion.
Chunwoo came back to Ho-in because he made a promise to Ho-in that he would come back, which is why he went to his house, but he was still not emotionally stable from his encounter with the second ml, which is why Chunwoo told Ho-in he slept with the second ML to push Ho-in away because Chunwoo was just so done with everything. You clearly missed that again because you are not reading from the reader's point of view. You just don't know what bare minimum is and think what Ho-in was giving Chunwoo is great. Maybe you haven't experienced that, which is why you think every bare minimum thing is like gold.
Anyways now that we moved on i never thought of what we were doing as some sort of an argument I thought about as us having a discussion and i liked it. I don't know about what you think but it will be cool if we can have some more discussion but a different manhwa that will be fun other then that i have nothing against you.

Some of here have some sick parasocial with lots of bl tops and just like to hate on bottoms just because the top is doing the bare minimum. Chunwoo never cheated on the top as they never made their relationship exclusive which is something they agreed on. Ho-in himself said that he will wait for Chunwoo to develop feelings which made Chunwoo feeling bad and said lets just stop being sex buddies. But after that Chunwoo hurt his leg and Ho-in had the audacity to guilt trip Chunwoo that he was making him miserable btw something he agreed on from the start. Then came the situation with the second ml and Chunwoo felt guilty that someone was waiting for him that was so in love with him that he felt bad for even doing something with the person he loved. Which was the second ml because Chunwoo knows how hard one side love can be since he is also in one. They only become exclusive after that situation were Chunwoo fully agree to date him but then again you guys pick and choice on who is in wrong.