The first half of this book was difficult for me to get through; but after that, I somehow got sucked into the story after all and finished the rest in about two days. 
 To All the Boys I've Loved Before is cute. It's not earth-shattering or amazing, in my opinion, but it's cute. I especially liked the portrayal of the sisterly relationship between Margot, Lara Jean, and Kitty; but also Lara Jean's experiences with the boys were nice to read, as well as the three girls' relationship with their father, whom they sort of try to take care of after their mother has died. 
 For some reason, I had expected this book to be more of a chicklit with an adult(-ish) protagonist, so I had to adjust a little when I found out the protagonist was in fact a sixteen-year-old girl. Maybe that is part of the reason why I did not like Lara Jean so much - which, in turn, is the main reason for my rating. I'll try to explain why. 
 I've seen a lot of reviewers of this book who were annoyed by Lara Jean's innocence and Miss Goodie-Goodie attitude, but that was not even really the problem for me. I'm a Miss Goodie-Goodie myself and when I was sixteen, I was probably about as innocent as Lara Jean was. That's not really the point. The point, for me, is more that she is so incredibly naive about it all. To give an example: it's one thing that Lara Jean has never cheated on a test and doesn't like cheating, but the way she responds when someone (I'll avoid spoilers) tells her he cheated on a test once suggests that the idea of other people cheating at school has never even crossed her mind - and THAT is what annoys me. Even if you don't cheat yourself, how can you not be aware of the fact that it happens - probably a lot, if my class back then was a good standard - all around you? Lara Jean is not your typical sixteen-year-old and I like that about her, but it just seems weird to me that she should not know how your typical sixteen-year-old DOES act, especially if she's surrounded by them at school every single day. 
 Another example of this is the fact that at some point, Lara Jean finds out that Margot, who is eighteen (at least, I believe she was two years older than LJ), (view spoiler)[ and her boyfriend of two years, Josh, have had sex, which Lara Jean is completely scandalised by, because there was a pact the sisters made (many years ago) that they would not have sex until they were married and/or twenty-one years old and loved the guy very much. (hide spoiler)] Sounds great, and sure, promises between sisters shouldn't be broken; but this promise does not even concern Lara Jean herself and I kind of rolled my eyes at Lara Jean's reaction when she found out about it. I won't say it's self-evident, that this happened, but how can it possibly come as a surprise? 
 The funny thing is that nine-year-old Kitty seems so much more mature than sixteen-year-old Lara Jean in almost everything. LJ goes to her little sister for fashion and hair advice - and then I don't mean she asks her how she looks every once in a while, like I do with my own three-years-younger sister, but I mean she actually asks Kitty her opinion about pretty much every single outfit and Kitty seems to know a lot more about it than LJ does. I don't mind protagonists who aren't into fashion - again, I'm not into fashion myself - but her nine-year-old sister? Really? And why does Lara Jean own pink rainbow sweaters? They seem too "kiddish", she says at some point in the book, and my first, quite sarcastic thought was, "Well, I'm glad you finally figured that out at sixteen". 
 Okay, this was quite a long rant and I think everyone gets my point, so I'll stop now. All of the above is why I did not rate TAtBILB higher than three stars, but I did enjoy reading it - it's a nice and easy read for when it's raining outside and you want to curl up on the couch with a book and a cup of tea. I don't think I'll be re-reading this book in the future, but I will be reading the sequel, just because I'm curious about what else will happen.