I agree with you. Hee Bum actually already giving signs that he's started to move on from Yoo Woon. That's the reason yoo woon tried to get back together with Hee Bum in the frist place, no? Because he thought that hee bum will wait, so when he no longer wait for yoo woon, yoo woon baffled and tried to keep hee bum by his side. But even though it's like that, Hee bum still feeling confused about his feeling. He's wondering if he still likes yoo woon or if he likes jumi more. That's why he "tasting the water". Moreover, there's the problem with their family. So yeah, we can't exactly put the blame on just one person. Each have their own situation that make them do what they've done, it's not completely justifiable, but it's not enough reason to put the blame on anyone, really. ╮(￣▽￣)╭
You're right. Yoo won just started to win heebum back is when he talked to the girl who liks him ( i forgot the name of the girl) that she warned yoowon about jumi and hee bum's feelings for each other. But I cant blame yoo won since he choose between his family and his lover. Of course anyone will choose their family that's why its so sad that when he needed hee bum the most it is the time that hee bum is confused about his feelings. However, I hope everything will be alright. I really ship hee bum and Jumi but its okay with me if heebum will be together with yoo won again. :)
I thought after heebum and yoowon come back together everything will be okay. I as a little bit hurt since I love jumi and I shipped jumi to heebum! I understand everyone's situation.
yoowon- he chose his career over hee bum coz he believed that hee bum will understand every situation that he is facing right now. However, he became too complacent in the situation that hee bum will undersand everything and willing to wait
heebum- he really love yoowon and willing to wait or undertand. But because of yoowon too much complacent, heebum unintionally turned his attention to jumi. He loves yoo won but because he got too attached to jumi he didnt realize that his love for yoo won is not that strong and slowly develops feelings to jumi.
Jumi- Jumi really wants to get back the two guys. But because of some circumstances like hee bum being too attached to her and yoo won became too open to her. She didnt know what to do. She keeps on rejecting her feelings to hee bum because of yoo won. And its sad because jumi is the one who suffer the most.
overall:
I cant hate those three. In reality, there people who is like yoo won chose the most important in their life and put their efforts in that important thing that they didnt realize they forget that there is someone who is hurting. Also there are some people who are the same as hee bum that they didnt realize they are falling out of love to the person they love the most. They tend to cling in the past believing they still love that person but in reality it changes because someone came in. And lastly there are someone who are the same as jumi that where torn into 2 things.
The author presents the different struggle of life here. I think how she let the characters portrays it somehow give justice to the people they represent on. I cant get mad to hee bum knowing that he just loved yoowon yesterday and now he loves jumi. But no because in previous chapters there where signs that their feelings changes and also read between the lines. Its already shown slowly the changing of character's personality and preference.
(sorry for my english)