What should I do??

Hey so I am Suzie and currently I am in grade 9th. Their is this boy I like let call him S and allegedly he likes this other girl M. However the issue is S always stares at me no matter what I am doing or what he's doing he will stare at me in class whenever he wants.

Also ppl used to think I liked him and this spread till Ms friends and now they hate me. Great whatever.

Now however ppl are aging shipping S and M even though S stares at me even during the class which me and M share. I try not to let it get to me but yeah idk what to do anymore.

So should I like S or not??