So there is this guy in my school. Every where we go , we see him. He always message my friends an I saying : I seen you today when sometimes we don't see him. He is scaring us and we don't know what to do. He is known for being a stalker and we are the only people who are nice to him. He is starting to scare us , what should we do ? We feel sory for him, he has no friends and is really socially awkward. He walks everywhere we are and he always seems like he is looking for us. He tells us gongs we don't care about such as : my dog ate flour. We don't want to be rude, what do we do ?

Befriend him.

You said he doesn't really have friends so maybe this is his way of tryingto make friends. Befriend him and see if he had a reason for the random/strange comments he makes.
Hope this helped :) :) :)