Should I be worried or not?

i am in highschool, and this guy in my class has been a little suspicious. he sits next to me due to a seating chart. firstly i want to say, i have a boyfriend and he has a girlfriend (in the class). but he was been doing things that are flirtatious. he sits with his leg against my upper thigh, he pokes me randomly with his pencil, he always pats my head to comfort me, tells me i’m very smart, and today checked me out while smiling and wasn’t ashamed others saw. so what could this mean and what should i do?

Should I be worried or not?
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