I could tell what was going to happen just by reading the synopsis of this book. This book was just alright in my opinion - if you want mild spoilers/ramblings or whatnot then keep reading. 
 Like I said, pretty common YA plot points. A broken kingdom's heir seeks revenge by infiltrating enemy kingdom, a close friend that is madly in love with the main character (who of course doesn't return those feelings), and an arranged marriage that turns into something 'more'. What can I say? After reading the synopsis it was easy enough to tell exactly how this book was going to end. The 'blind desire for revenge' turns into a budding romance where our main character suddenly realizes that there are more sides to every story. I would definitely throw this onto my 'feels okay, fluffy, but not too terribly deep' shelf. 
 I was intrigued by the idea of the 'useless' princess, but it fell a bit short of my expectations. I definitely will read the next installment, because I'm interested to see the introduction and role of a particular character introduced near the end of the book. 
 Overall rating 2.5