A guy had a crush on this girl. He follows her wherever she goes. One day the girl noticed and asked the guy:

Girl: Why do you keep following me?
Guy: Because you're so pretty and I think I'm falling in love with you.
Girl: Really? But you haven't met my friend yet. She's prettier than me and she's right behind you. (Guy looked behind him but found no one)
Guy: Are you making fun of me? There's no one behind me.
Girl: No. But if you really love me, you won't look back.

- Unknown