he is young right? probably totally infatuated by you. He might be a dumb fucker, but not dangerous. Shouldn't be a tense situation causing you any sort of depression. I would say calm down, people here are not helping much, take some necessary precautions. If he is still stalking you, take him for a coffee to a public place. Find out more about him then tell him to fuck off. I am sure you can take it from there.