Not much to say about this one, except that I actually liked the movie a lot better. 
 The book, unsurprisingly, had more POTENTIAL to be good (the movie kind of zeroed itself in, very black and white, no gray areas, limited setting, etc... but somehow made it WORK really well) but really wasn't. The characters were sort of like the Wesen from Grimm, and it would have been nice to explore the darker aspects of their not being real humans, as the aforementioned show does, but frankly Klause seemed more focused on explaining that her characters were horny teenagers. Which, from the plot and (grossly limited) character development, really didn't NEED explaining. 
 I know a lot of reviewers hated Vivian, I didn't (I even liked her at some points), but I still think there was A LOT more the author could have done to make us readers sympathize with her. 
 Also the ending is kind of suckish. I get that it's about how she chooses "werewolf" life over loving a human (though, spoiler alert, only because said whiny wannabe goth punk human dumped her butt) but it's a lame ending because it's a crappy resolution. 
 The whole book is "I don't want to be with Gabriel," therein lies Vivian's problem, though admittedly it's a little more complicated than just that alone (she has something of an identity crisis, between her human and wolf halves). It's resolved by just making her end up with him ANYWAY. And for all the lousiness that was her human boyfriend, at least he wasn't a forceful, creepy stalker like Gabriel. Though, in fairness, Vivian has a little bit of forceful creepiness in her own nature, so (shrugs) maybe they'll be happy together and the author just decided to give up and that her two, less than stellar characters deserved to be together. Even if it meant the entire plot was thus made pointless. 
 Don't recommend. 
 Just watch the movie, people, it's more fun and makes more sense.