The way it's shown in the movies is how u met Chan first. He's a broken man from the past. He blames himself and is still grieving over the death of his first love in a car accident. ur the light to his dark life. Despite knowing he would never love you back, u begin to fall in love with him. u have always been there for him, and he really cares for u. He's fixed by you. ur ability to heal people is one of your secrets. In order to bring dead back to life u have to sacrifice ur soul.