Is it true that a shy guy running away from you is a sign he likes you?

i have this shy guy in my English class and he's looked at me a lot before but the other week I tried leaving class behind him to talk with him because I like him and he freaking ran away from me! like he walked fast and kept turning back to look at me...?

i talked to a few guys about this because he made me feel bad like and the look on his face he was like scared or something..tense I don't know but he made me feel really bad : (

what could this mean?
Is it true that a shy guy running away from you is a sign he likes you?
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