What does it mean when a guy looks at you a lot?

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Me and this kid in my science class started talking when we were assigned science partners in chemistry and we really hit it off and talked the whole time but we arent partners anymore and I don't really talk to him in class cuz I'm not near him but every time I come into the class in the corner of my eye I see him eyeing me just every time I get up from a chair or get a Kleenex or something I see him looking at me and every time I see him in the hall he gets really awkward and avoids eye contact I am a senior in high school and he is a junior but I think he's really cute and I'm trying to figure out if he feels the same