Don't worry; I wouldn't offer you such a book unless there was a gun put to my head.
Speak: Laurie Halse Anderson
Thirteen Reasons Why: Jay Asher
Cirque Du Freak: Darren Shan
Peeps series/ Uglies series: Scott Westerfield
Those are the teenage books I can remember thinking were really good...
I also worried about this, but I still ended up posting my story on Fictionpress - only the first draft, though. So much will be changed second draft around that I'm not really worried. However, that's a big risk I'm taking. If you don't want to take that risk, you could always find some people...