2.5-stars? 
 So, this book is called, "The Summer I Found You." However, summer doesn't even happen in the book--it's all set in the spring. I kept waiting for it to be summer. I absolutely cannot fathom that no one in the editorial process thought that maybe it was not such a great idea to have such a disconnect between the title and actual book. 
 My comments are taken from an ARC, which had a lot of spelling inconsistencies (Aiden or Aidan???) and grammatical-type things that I hope were corrected before publication--I don't think I've read a review copy that is so not ready for prime-time. There were also some inconsistencies regarding Aiden/Aidan's loss of his arm (ie, he clinches his fists, and some wonkiness with how he could read certain things, like the right and left were reversed in the scene). 
 Anyway... I did like the romance between Kate and Aiden/Aidan quite a bit, it was sweet and made sense for the characters' ages. (I see that a lot of people call this "new adult," but it reads as YA to me.) 
 However, I had a ton of issues with the way Kate's relationship with her parents was developed, and the downright unethical approach her doctor father had in terms of Kate's healthcare. They attend all of her doctor appointments and basically disempower her in terms of managing her diabetes, and yet there are no consequences for their actions. Reading this really drove home how well some authors write from a teen point of view, because this was clearly an adult perspective and had an undertone that Kate should have listened to her parents (when I believe they were to blame for her mismanagement of her disease). Kate does become somewhat empowered in her own medical decisions in the end, but this whole element was very troubling for me. 
 I also wish Aiden/Aidan's character's experience in Afghanistan had been explored more, particularly his relationship with his friends from the military. 
 I know it sounds like I'm kicking the crap out of this book, and I don't intend for it to. It's very readable and well-paced and, like I said, the romance is very well-done. The other elements, however, didn't work for me.