
You need to go back and read the chapters you skipped. They both have physiological problems MC seems to have APD he not only can't read emotions but doesn't have them for the most part, his original intention was to use ML but he started having feelings for someone for the first time in his life. ML suffers abandonment issues and years of mental and physical abuse.

ADP as in auditory processing disorder? Did u mean ASD, autism spectrum disorder? Either way, I still don’t see how they can be together with so many personal issues. Dohu may be feeling sorry, but he can’t properly express it, and it’ll be hard but with some behavioral therapy, he can mange in an equal 2 person relationship. Bc rn, Yuheon is the one keeping them together.

In some cases, time skips are really useful but I don't think it would be the case here.I don't think Dohu would change even if there was a time skip because it's just the way he is and it wasn't a problem before Juheon found out about the start of the relationship. Juheon is just interpretating something wrongly here, pushing his traumas on Dohu. What's making Juheon upset is that he thinks Dohu was faking interest and planning to let him down once done with him. But that's never been the case. The time skip could have been usefull if Dohu was really trying to take advantage of Juheon, reaching actively to him, faking affection, being someone he was not, lying and stuff but that was not really the case here. At the start, Juheon knew that Dohu was not really proactive in building the relationship and that he had to win him over. He just got along with Juheon and let him follow him around so that he could learn more about him, which he probably wouldn't had done if he wasn't in a writing slump but he didn't fake anything. He was studying Juheon because he found him interesting, sure, as inspiration for a character but it was a genuine interest noneless. And along the way, he started to have affection towards Juheon. If you think about it, every relationship starts this way : you think someone is interesting and that it could do you good to have them around, and then you build the relationship, so you are always searching for something (filling up a void, being understood by someone, having fun, etc.). The only problem here is a big misunderstanding, just resolving it would solve the problem since the relationship was healthy before in my opinion
They need a clean break up. He needs to go abroad, move to NY, or join that acting agency to find himself away from Dohu. Dohu prob has a neurological issue (I skipped a lot of chapters and took like a yr break from this, so if it was mentioned already oops!) that makes him not able to read emotions, and should get some medical help with that. And I hate time skips, but I think one would work here. A time skip of like 3 yrs were they both worked on themselves would be beneficial. Dohu could finally get across his sincere apology and juheon could be emotionally and mentally well off to genuinely accept it and hopefully build up his own power/wealth to go against his family. I literally do not see how this can work out without a time skip with personal growth…