He's almost perfect, except for his childhood and his obsession with you. They are both really bad and damaging in some ways to him. He used to be kidnapped and you unintentionally saved him. He grew up and never forgot about you since. He always stalks you, collects your used stuff like tissues, straws, even photographs of you. But he isn't irrational, he keeps all of that hidden since your crush is obvious and he wants to save image. He knows everything about you and he only wants you.