I'm a teenager I've got problems

High School AU. Dean has all kinds of trouble: he's close to getting kicked out of school, he's got a pregnant ex and an unwanted stepmom. When Sam befriends Castiel, the cousin of troublemaker Luc, he's not sure if he's got a problem adding to the list. Eventually, he finds out that Cas isn't quite the way he expected. / slow built DESTIEL and other pairings mentioned / COMPLETE