I can't remember the title of the book, but I read it just this past summer, and loved it. It took place in the future, and was set in a society where everyone lives inside these enormous buildings, called something like 'urban Magnons' or something like that. Each building is basically a city. During the night, people go 'night walking' and have sex with random people. one of the guys ventures out of the building, which is unheard of, and finds that there are people living out on the earth, which he cant believe. when he goes back to the building, he is arrested and killed.
anyways, if anyone knows what book i am talking about, please give me some feedback!
thanks!
-Dustin

this is childrens/juvenile fiction?