This person is like a rainbow, and you will know when you meet him.
Is there such a person that once you see him you can never let him go? You can't help but spy on him or you can't help but do good to that person.
Is there such a person that once you like it, you can never let it go? In this life, this person is the only one you can worry about.
Is there that person who makes you love or hate you, who lights up your world and makes you lose all the light in this life?