Honestly, I've been facing many arguing scenes in manga, it's mostly that either both of them have strong personalities and are smart; or one of them is an extremely retarded person who only cares about themself and denies anything that doesn't work like they want.
Whichever of them, it'll...
I found a manhwa that is somewhat similar. but the differences are that the both of ML and FL are psycho
https://www.lezhin.com/en/comic/headoverheels/
When Junwoo said that it feels good to be loved, I kinda remembered about what Plankton said, "It's better to feel loved and lost, than to never have loved at all". Well, I think it's just me,, argghh, just ignore my comment
Wait, the president has another woman (that seems like the "goddess of luck/fortune" or something) besides his wife? And moreover, he has a child from her?
Oof, it makes me have a ominous feeling..