Find That Book

ive tried searching this everywhere, basically it's a book where a boy (teenager?) is trapped in some town, as in when he tries to leave it and run away no matter how far he runs he's still in the town. When he tries to run there some significance about how the trees looked the same or something or they all looked identical so he would get lost in the forest but still be in the town? Then, at some point, he uses a computer in a public library or something and has people waiting on him maybe, to search up like a name or a thing or something. This alerts like the government or some agency that it has been searched so they make a chat pop up on his screen asking like who he is and why he searched that, and he responds also asking "who r u". They figure this means he is a teenager since he used r and u. I think this happened at the end of the book? There might have been someone in the town trying to make him stay too, and there was something evil about the town? Thats about all i remember but its driving me crazy! anything helps thanks!