Why would a boy look at you from across the room or hallway?

I hope i don’t sound delusional but he tends to look at me from across the halls and when he’s talking to his friends he would glance at me doing so. I’ve noticed when I talk to him he gives me all his attention and doesn’t break eye contact even when his friend was around and tried saying hi? I know he probably doesn’t like me so is this behavior normal? Or am I just over analyzing things? (We also haven’t spoken in awhile and I doubt he thinks about me even though he does tend to look at me when I walk by but that’s nothing)
Updates
3 mo
Also there are times when he is standing and I come near and he sees me but quickly turns his head the other way?
Updates
3 mo
He never talks to me first though? And I asked him for his instagram and he never followed back? I understand that he may not be active but I don’t think he likes me😭
Why would a boy look at you from across the room or hallway?
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