Awful. Just plain awful. 
 "You're not like other girls I know." he says. I hate when guys say that, like it's some sort of compliment to say girls suck in general. But I don't say so. I can tell he's trying to say something nice." 
 To hell with defending your entire gender! The hot jerk is trying to be nice! 
 And that's just one of the examples where this book fails to be anything remotely close to girl power. One character, Sadie, is the most stereotypical "bitch" character ever, and all the main girls are just as terrible of stereotypes as she is. Multiple times in this book, the main character states "the Bad Girl, the Smart Girl, the Rich Girl, the Sporty Girl, and the Sick Girl", which is all these girls ever truly are. There's a vain attempt to bring them all into the real world, make them three dimensional, but it's so obviously a ploy to make them more relatable and is all thrown in by the means of explaining the "blackmail", that it seems forced. 
 I liked the idea of a character with an illness, but the problem was, was that was Hope's only defining character trait, other than her obsessive crush on her best friend, who BY THE WAY, is such a jerk, and manipulates Hope into feeling guilty for dating another guy even though he has a girlfriend, and while he still has said girlfriend, shares a very intimate moment with Hope for all to see. Nope. 
 The other love interest, Tucker, is a nice guy, and I guess sort of defies "rich boy" stereotypes, but only so much as to be the cliche "deep and thoughtful rich guy with a secret heart of gold" (which, I might add, (view spoiler)[ the author happily stomps on to move the plot along (hide spoiler)]) 
 AND THEN we get to the "Bury your gays" problem, which just made me really mad, because one, obviously that's terrible, but two, HER SEXUALITY WASN'T EVEN INTRODUCED UNTIL ALMOST PAGE 200. There was no point to making the character gay except to add character depth, a failed attempt when you insert it way too late and then kill the character off anyway. It was weird and forced and not all romantic or had any chemistry. And her death was supposed to serve as the reasoning for the MC's new found look on life, and that could've definitely been done without a death in the mix. 
 Now, I've read a lot of YA mystery, and sometimes you can guess the killer or the big bad right off the bat, which isn't very much fun, but the way to avoid doing that isn't to completely avoid any clues or hints until the big reveal. The reveal came out of ABSOLUTELY nowhere, because the reasoning behind the big bad is something that's mentioned twice, a hundred pages apart, has no relevance to the story at all, and when it is mentioned, it's mentioned in a sentence at a time. ((view spoiler)[ And I guess if you were REALLY looking, you could tell that Lyla was being weird and she did mention her sister I think twice in addition to those other two hints I mentioned above, but the individual reasons for each character being brought in weren't introduced until almost the very end, and so it made no sense whatsoever, and it was impossible to see the reasons behind the mystery until they were handed right to you (hide spoiler)]) . A mystery should have clues, but those clues should be subtle. Subtle means they should still BE THERE. 
 ((view spoiler)[Also the scene where Hope found out about the naked pictures of Jenny felt distinctly judgemental and blame-y on Hope's part. Dude. That's your THIRTEEN YEAR OLD SISTER. Are you really slut-shaming her right now?? Really?? (hide spoiler)]) 
 I actually enjoyed the last maybe 30 or so pages of the book, but I really wish I hadn't wasted all my time reading the rest of the book because as much as the ending was good (minus the unnecessary "cliff-hanger" that was added in just to make sure a sequel could happen), it wasn't good enough to make the rest of this any less painful. 
 Overall, don't wast your time. This book took me an entire week to read because I just couldn't deal with the stupid that was happening, the 2D characters, and the annoying supporting stereotypes, I mean supporting characters.