For some reason its giving Stockholm syndrome. If she didn't spend so much time with him, she wouldn't have agreed to date, I know that for sure. Sihyun just waltzed into her life and never left.
@Emilieaaaa As much as how twisted this is, it's not Stockholm syndrome. Since he never really trapped her or kidnap her. If she really doesn't like to he would easily leave, he did it once but she run after him. And she let him get realllyyy close to her without complaining and even getting along with it. So now she's stuck that with obsessive puppy.