The thing is that Aerak only liked that asshole for his appearance too. So they're basically a matching couple.
But thats different. He was an isolated lonely kid that was smittem with the first beautiful he saw. I think he an Heeno should resolve their problems. Like they can still be together but there is a form of healthy reconciliation. Thats a healthy relationship. The Heeno realizes the truth if the past and they both can move on, and Heeno realize how much he affected and hurt Aerak and spend his time helping him heal with his selfesteem problems and apologizing properly. You don't just leave those things unchecked, thats not healthy and can lead to bottling. Besides Aerak is still suffering. He still bottled it up and is not getting much support for his past. Which obviously still bothers him. I although do also agree he should reconcile with his redhaired friend (I forgot his name,... that's how irrelevant he suddenly became after that short story arc). Their story is the only one that doesn't really have healthy resolution. It's obviously gonna keep hurting them.
I just reread this and omg I love everything about it to death, from the art to the story to even the individual characters, but I was also reminded about how much I hate the relationship between aerak and heeno like why would you even do that?? It's not like heeno became accepting of fat ppl, he only liked aerak in the first place bc of his looks and nothing else, like he didn't even reform his way of thinking or anything and that just pissed me off so much bc why would you want to be with someone like that?? I honestly would have liked aerak to get together with that red haired guy bc he actually likes aerak for more than his looks and it would have been a nice way to say that outer appearances don't matter which is what the central theme of this manhwa has been,, accepting your differences and loving yourself