Heeseung as your unexpected boyfriend because something happened between you two, and he wanted to take his responsibility, you met him at xylo, that night you're wasted and he's sober, and since that night he didn't want to let go. He insisted that you should live with him and since you can't do anything you just agreed. you already taked pt for 4 Times but it shows negative, but even though it shows negative, heeseung still didn't let you go and treated you like a princess