HELP! this werid guy likes me at school make it stop!!?

hes werid i dont know why but someone asked him how many times do you he said like 30 and they asked who do you think about and he said cindy and i was like EW and he gets mad in my cl so he went outside to the hallway stairs the door was open in my cl and he started in the hallway and everybody was looking at him how can i stop thisQ