This story seems ready made from translation to screen, and I've no doubt that if the right people pick it up, that is what will happen. For a young adult, it's a great read.
Stylistically, though, I think Ruben has more to develop. The writing seems littered with thesaurus substitutes and repetitions, which if edited more carefully could have cut the book size down considerably. The constant iterations of how hot Derek and Finn were made me glaze over certain sections, and in the end I skipped forward to the last section to find out what happened.
Overall, the story and plot has great promise, but I think could benefit from some more careful editing.