I skipped over the middle chapters to see if their relationship got better in the latest ones. But actually it gets worse.
The entire time, I was praying in my heart that this doesn't develop into some sort of NTR thing with Eunyool and Choi. The story markets itself as something more serious, and I don't think I could keep reading if the uki starts cheating on the ML.
Lee Kang is an idiot. But at least he's mature enough to know that he is in thr wrong.
Kwang Muchan is also an idiot. But he's an arrogant bastard who only knows how to think with his fists and not his brain.
All of us know that cheating makes you a trashy person. But hello? It's fiction. It ain't real. No living breathing human being is being hurt.
It's the same concept as a student teacher relationship. IRL it's fucking disgusting, but we know the story is fiction using cartoon characters. Why take it any more seriously than porn?