Seriously bad writing and story even for a fanfic. Even if they did edit out the chapter-long sex scenes that will be the worst you've ever read. If they didn't, I can't promise that your genitalia won't want to shrivel up and die.
Simon and Schuster not only lacks integrity and ethics they lack any sort of taste whatsoever. Real authors: Send your books to better publishers, there are still a couple out there. Hopefully this one will collapse under the weight of the sheer and utter crap they acquire instead of real books.