
i don't understand what's so upsetting about them breaking up because they can't do long distance, i think he made the right choice for both of them because they couldn't spend enough time with each other and sunwoo didn't have the emotional maturity to end a relationship he held onto so badly.
they both became successful and they met after few years and yeah i find it quite realistic because not all couples can do long distance.
this is CUMmunication not communication my friends.