I think I'm being stalked?

So, I was talking to this guy from a town about an hour from mine. And he randomly knew a lot of things about me. Stuff no one else knows. He knew how many siblings I have, and what gender they are. He knew my parents are divorced. He even knew things that go on inside my head, that I never talk about with anyone. How the heck would he know about those things?
And he was “Guessing” why I like to run. And he said almost exactly what I would have said. He even knew that I run to a tree, and sit under it. Nobody knows that…
So, what should I do? He can’t just be guessing.