How do I get him to notice me

I'm 15 years old and there is a boy in my school and I have the biggest crush on him. I have told him that I like him and ever since then we haven't spoke as much as we used to.. We were really close friends and talked nearly everyday and now we never speak over text and not much face to face either. It's bugging me because I don't know what else to do. All of my friends say that he gives me a 'look' that he doesn't give anyone else. What should I do?

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