lol As someone who is 24... I
don't read much teen lit stuff... I tend to want to slap/shake/punch them for being idiots half the time.
Nora Roberts has good series (tons of them) and instead of one person being the focus of all the books in the series there are generally several focuses, with the books switching who's point of view it's from. And all deal with lots of friendship and relationship stuff. AND have some sort of mystery and/or horror-esque theme... it's not all gooey romance.