Why he often stare at me?

Question

How a teen highschool male behave withuifhejustpretendtolikeu?

boy who was study with me since childhood after covid in class 9 he staring at me but i dont notice that much in 10th i mostly catch him staring at me without any expresion but he dont look away , if other boy was standing without notice me and dont give space to go he shout at them letmego , he also push them once it happen 3 times he always talk in nonverbal communication and instead of call by name he touch me , in class he only talk to me for seeing my notesonce, one day i dont notice and we bump into each other we both say sorry at same time after that he ask me are u hurt or okay? , i am a girl in my class who doesn't talk to boys unnecessarly, when iask questionto any male either teacher or student he stare at us , sometime he give me attention sometime not? Many new boys inmyclass also stare at me i dont think i pretty to look at.Friday incident-We have to conduct school assembly and i was an anchor as well as incharge the monitor of class have to write name those who are intrested. The boy have given his name to the monitor i ask monitor to ask participants if they are assured to comewhen the boy asked he say he was joking to monitor he dont want to participate , i feel so much angry at that time because but i control and said to him why you do this acting and why u give ur name then because whenever he participate in it he always absent. He tell me to say louder because it lunch time and so much noise when i say louder he start argue with me in loud voice but i dont say anything and ignore him becuse teacher come. After lunch we have pe class we are in the ground when he pass by side he was giving me death glare like he was going toeatmethisis1sttimehedothistome.Today he stare at me but i ignore himso hedo fakecough to get attention and when i stareat. himhealreadylookingatme.Please help me with ur advise and reason why he do this to me. I was so much confused.