Well, this sure is a book that I read.
I have a lot of scattered thoughts, mostly negative. But here is a list of the biggest issues, off the top of my head:
* Hailey pursues a physical relationship with a 21-year old who, knowing she is only 16, reciprocates. If she was a real person, I wouldn't fault Hailey for her interest in an older guy, but I have some concerns about the writing around Hailey's actions here, since it's adult authors making these decisions. But I have far more concerns about him, and about the responses from the multiple people who know about it. He's portrayed as being an asshole in general, but his interest in an underage girl is barely addressed. Also, while Hailey does pursue him and repeatedly calls/texts/meets up with him, he is extremely pushy, and while Hailey says she "wanted" everything that happened, there was substantial coercion, guilt-tripping, and manipulation. His coercion goes completely unaddressed, and everything is treated simply as a "mistake" that Hailey made.
* Hailey's moms. First, while it is true that many people fit stereotypes, you can't just make them walking stereotypes and magically make it okay by having a character make jokes about how many stereotypes they fit. Her moms have no attributes outside of lesbian stereotypes.The way Hailey talks about them is also weird. It felt kind of like she didn't really view them as her parents. We know she was adopted, so that could make sense if she was older at the time, but there's nothing to indicate one way or the other (unless I missed it).
* Speaking of LGBTQ+ people, bisexuality exists. Except apparently nobody in this book knows that, so if you like guys but kiss a girl, I guess you're gay now. But don't worry, if you turn out to like kissing that girl but not be in love with her, that proves you're not a lesbian. I guess.
* Not that this should be surprising, considering how badly it handles statutory rape, it also does not deal with sexual assault (in the past, of a minor character) well.
And now some issues that aren't red flags:
* It tries too hard to sound like teenagers, especially teenage boys. Look, I get it, teenagers (and not just boys) think about sex a lot. One of my favorite quotes from Buffy is, "I'm seventeen. Looking at linoleum makes me want to have sex." But there's a way to write natural-sounding teenage dialog and thoughts without endlessly referencing boners or--and I quote--"pink parts." You have to aim for a point that implies it's a common thought, rather than trying to outright mention every time he thinks about it, otherwise it just feels really awkward.
* The freaking time jumps. This seems to be a standard complaint even from the higher reviews, because it's not particularly well-executed. There are several places in the book where you are suddenly informed that several months have past since two paragraphs ago. I also don't love it in context--each of those jumps indicates a period of time when Hailey and Kyle stopped talking for some reason or other, and while the book is primarily about their relationship, they basically seem to not exist outside of it? Even the several month time skip in New Moon, when Edward left Bella, both 1) had a clear indication that time was passing and 2) reflected Bella's actual state during the skip. None of the skips in this book do either, especially for Hailey.
* I have some concerns with the way Hailey's blindness is addressed, but nothing I feel qualified to elaborate on. I didn't particularly like the repeated references to her eye doctor telling her she had "old-person eyes." Also, we get a lot of talk from Hailey about the preparation she's done for when she's completely blind (which she generally refers to as "black-blind," which I think is probably not great), but she never actually does any in the book, except on her own as it relates to the list. (Nothing stood out to me as a major issue, but I am not blind so it's entirely possible I'm overlooking/unaware of/not grasping the significance of something.)
* This book was the absolute worst of both worlds in terms of engagement level. I cared just enough to keep reading it, but not so much as to not get bored after a chapter or two. I couldn't even say why, really.
I didn't mind the characters being a bit on the unlikable side, and while they were a bit inconsistent, it never pulled me out of the story too much. But there are way too many issues for me to recommend it.