I personally felt bad for seo-jun. I wished it the joo-gyeong would feel little about his feelings. People should understand now the trend is about getting one of dark thoughts, a person who is strong enough for doing anything but stops for her. Love means patience, continuously being denied and not observed even then he rushes for her. Every time he gets to know she is hurted, or I'll or in danger he moves first. People nowadays like these kind of men. I believe that if they would have a couple it would have been better. The story line would be better.
For me personally as a new writer, I feel; love is all about the other person's feelings and care. If joo-gyeong would have seen little more for seo-jun, she would have understood he would have been the best choice. A person who leaves u for the sake of anything, any x y z reasons is not love. Love is about holding hand and moving ahead and facing everything that comes forward.