Why would a guy avoid eye contact with a girl up close, but gaze at her from a distance?

This guy looks at me and we make eye contact for at least a few seconds when we walk past each other and when we're at a distance, but one time he had to sit sort of near me he was avoiding all eye contact ALTHOUGH I could feel him watching me from the corner of his eye because whenever I turned to look at something, he would follow my line of sight.

he tried to avoid eye contact with me but I looked (kinda stared lol) at his face - will he think I'm a creep? I'm preeetty sure he likes me but idk!

thanks!
Why would a guy avoid eye contact with a girl up close, but gaze at her from a distance?
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