Hyunjin had been your partner for years They broke up some time later due to a misunderstanding you had where you stopped seeing each other until now where the two of you by chance ended up going to the same friend's party When he saw you at the party he tried to avoid you as much as possible so as not to have arguments with you and to be able to enjoy the party until he started to get drunk and saw you very close dancing with your friend Seungmin which made him get jealous and approach you