I want the wife and the younger guy to get together and dump the cheating husband.
That's fking bullshit. Just Cuz "HE'S" single doesn't give him the fking right. How about Be a decent person and Don't stick your nose up someone relationship. Ur saying if a girl/guy tried to pursue you partner and succeed you wouldn't hate the person for also getting in between knowing damn well they could destroy a relationship? Would YOU also do what he did to a couple? Just cuz YOUR "single" Would that make you a good person? Or a peice of shit?
Tell me when you get married who makes the vows - you and your spouse only or the entire world? You made a promise to each other to stay together and take care of each other. Keeping the promise is up to the 2 of you. If you don't want to be cheated on then pick someone who won't cheat on you to make the promise with. I expect my partner to keep the promise irrespective of how many people pursue them. If they will go after the first person who pursues them then what was that promise worth?
Read the laws as well. You get a better divorce settlement if your spouse cheats but you can't sue the person they cheated with coz even the law recognizes the fault is with the one who was in the marriage and broke the vows. A few countries in the east that had laws against cheating where you could sue someone for being the "home wrecker" also revised their laws. Basically if you can't keep your marriage together without help from the whole world you have a shitty marriage. Deal with it.
I agree with some of the comments that said the story is not very well written and large parts of the narrative is missing and none of the relationships are fleshed out. However the level of simping for Kangwoo and blaming of Jeonghan is shocking. The mangaka has given enough evidence for why Jeonghan felt lonely in that relationship. Everyone close to Jeonghan (his family and his best friend) knew about the relationship and no one around Kangwoo did. He didn't have the guts to tell his brother he was dating Jeonghan even when he was wallowing in grief after the breakup. It was heart-breaking when Gyutae tells Jeonghan he loves him and Jeonghan responds that it's the first time someone he loved said the words back to him - after a long term relationship where they lived together for 5 years if Kangwoo couldn't bring himself to say the words once then he doesn't deserve to be in that relationship. The worst for me though was the scene of Kangwoo and Eunsoo walking in on a beaten up Jeonghan who has just been disowned by his family. While Eunsoo rushes forward to hug Jeonghan all Kangwoo does is stay far away frozen up. He wants all the good things about the relationship without even owning up to it. He did not reveal the relationship to a single person and called it disgusting when his colleagues asked about it. Jeonghan is an idiot for putting up with all that for so many years before finally walking out.