I really wanted to like this but the relationship progression just makes no sense and these characters aren't believable. But I'm happy for everyone who enjoyed it!
Someone who screws you over professionally and lies about it isn't someone you can trust, and that's not something you can overlook because you otherwise "get along." You didn't get along, he was manipulating you
There's nothing wrong with being aromantic but there is something wrong with expecting someone to stay with you even though you know they're constantly hurting because you can't give them what they want. I get that younger Iseon didn't fully understand himself but there's no excuse for him now
I don't think this is supposed to be a sob story exactly, just an explanation that he learned from a young age not to say what he likes. Which then turned into him being incapable of genuine relationships or knowing his own feelings. It can be an explanation without being an excuse.
Gyeol can never escape