This book cemented a fact that I already knew.Books about crazy vicious teenage girls obsessed with popularity and where everyone seems to be backstabbing anyone is NOT my cuppa tea. Books like Pretty Little Liars, Gossip Girls, and of course Undone. So this may not be a bad book but is a book I hated. But by the blurb I had expected this book to be a bit different. I don't know what I was thinking.In the beginning the whole Letters from Kai with missions had a whole PS I Love You vibe going on which was another book/movie that I hated and I could not really make myself interested in all the moping Jem was doing. Then she started plotting revenge. It was all I could do to hold back my migraine from too much eyerolling.It was not that the writing was bad, it was not. But I had serious problem with the plot and the characters, especially Jem. I hated how needy she was with Kai, and though I could live with that, I couldn't live with how she made everything - including Kai's death - about herself. She was selfish and cruel and hiding behind Kai's name as an excuse and her revenge was not for Kai but for herself.And I couldn't get the character of Kai. At all. He was an idiot who tried to be cute. I could muster no sympathy whatsoever for him, and it is not because of my lack of trying. And his relationship with Jem was so out of the realms of acceptable.. I mean which gay dude continues to best and only friend with a girl even after knowing that she is in love with him? And which self-respecting girl acts all needy and clingy knowing that he knows how he feels and has zero chances of returning them? Insanity.Being inside this girl's head made me want to slit my wrists. And no, it was not because she was "suicidal". She totally was not.I am just the wrong person to read this book. And I DID NOT like it. 1 Star. That's all I can give it.