A guy had a crush on this girl. He follows her wherevar she goes.
One day the girl noticed and asked the guy: 
Girl: Why do you keep om following me?
Boy: 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.
(The guy looked behind him but found no one.) Boy: Are you making fun of me??
Girl: No, but if you really love me, you won't look back