The beginning was really exciting and I was anticipating the secrets/sci-fi relationships. One of my first guesses was the truth, so I wasn't terribly surprised. I won't say exactly so as not to include spoilers, but around then it started to seem very slow. The mysteries were mostly gone and it was unclear how to proceed from there. I'm on the fence about the book as a whole, maybe because I've read some really exciting/surprising books recently.
The romance was OK, nothing special, but kind of believable. I mean, they are teenagers... Overall, I think it was alright- well written and all- but I won't be continuing with the series.