What does it mean when you smile at a guy but he looks away?

could it mean that he's shy even though he looks at you a lot? its sort of like a way to get to talk to him because he's a really shy guy... what should I do?
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+1 y
btw he knows that I like him and he always looks at me a lot all the time. but he dosen't want to approach to me. My friends told me that he's shy when it comes to new people. so I'm not really sure about it.
What does it mean when you smile at a guy but he looks away?
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