How to make a guys stop liking you?

I have had this happen to me a lot at school. I do a guy a favor or treat them nicely just the way I treat everyone else and next thing you know they mistake my kindness start hitting on me or telling there friends they like me. It become so annoy know because there is this one guy who has liked me for fives years and won't take the hint that I just see him as a friend. I have tried ignoring him by not speaking to him or going out of my to avoid him but it did not work. I don't have to heart to tell them I just want to be friends, But I don't know anyway to make them stop liking me. PLEASE help!

How to make a guys stop liking you?
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