Drama start with two couples relationship story.
1.first couple in a relationship since three years ,they do not marry as they were not established well with respect to their financial condition so they make some plan accordingly they running their life
2.second couple in a relationship since 10years but here there was one sides love other one just full filling his responsibility based on promise he did to her mother.
These easy life get complicated when ku huan enter and mess with the life and mind of Wei Wei, make her realized that she was living according to the decision of her boyfriend ,she lived her life according to his plan ,there was no her decision and plan in his life . This think creates cracks in their relationship and she cross her boundary and get attract towards ku han and when they kiss each other then she realised that she was doing wrong and went with her boyfriend side ,on the other side in order to live better life he just doing his work not putting attention towards her and still taking his own decision without involving her which make them slowly slowly far away from each other , for her it is overbearing and when she saw him putting his hand around his boss's neck she just frustrated and upset as well as she get more angry when she came to know that he discuss their matters with the boss and they broke up . But I don't thing it's his mistake totally she never said him about Ku han and that they meet each other and even they kiss to each other ,she also wrong ..When he comeback to patch up she create misunderstanding to said that she slept with Ku han ,why she make everything complicated ,why she was not straight and truth towards herself that she did not like him or she found herself suffocated when she with him ,she felt uncomfortable all the time .Many times she had given a chance to this relationship but the feeling they had all were died . She don't want this relationship .Something like that .
All the three characters I think were wrong in their path ...Nobody was right. This drama have hatred ,cheating ,jealous ,revenge type of attitude .Only ending part is good .I know in reality such thing may happen so such thing don't happen with us ,so this story giving a message that never be slave of anybody decision and feeling .Very first always true to yourself ,secondly there is a need of mutual understanding in any type of relation and everything do not go according to plan so we should keep something free not bind it.