i hate my classmate but cant stop staring at them

hey so i have this problem where im totally obsessed w this annoying person in my classes. theyre always getting under my skin, like they take up too much space or something. but the weirdest part is, whenever they get close to me, i start feeling all tingly and it makes no sense b/c i hate them so much. i caught myself staring at them once and felt super embarrassed cuz everyone was looking at us. still cant stop thinking about them though.