Final verdict: 4.5 / 5 Stars 
 Anna Emerson is an English teacher and she accepted a job on tutoring a 16-year old boy (going 17), T.J. Callahan during summer. He wasn't able to go to class because he had a Hodgkin's Lymphoma and underwent chemo. On their way in Maldives to spend summer, the pilot suffered a heart attack and their seaplane crashed in the Indian Ocean. It was a nightmare to be in shark-infested waters and they were stranded in an island. 
 Eventually, they have to survive to live in an unknown island with every resources they have and hoping somebody will rescue them. They've waited for days, months and it become years. Anna and TJ bonded and get to know each other during their stay in the island. I'm in awed of their teamwork and surprisingly, I enjoyed how their relationship grew more. Actually, what happened to them is a great adventure yet a death-defying experience. I just can't imagine sharks and jellyfish in seawater. It is really scary to encounter those creatures. 
 It was nice to read this as an audio book and I really like its narration. I just can't stop listening to it and eager to know what happens next for them. The characters just have this raw emotion and it felt real to me. Okay, I'm going to be honest, I don't really mind characters with age gaps. I've read some books with characters like this but usually the guy is older than the girl.. It's new to me in reading the girl is older than the guy. Anna is 30 years old and TJ is 16 years old (going 17 (view spoiler)[but they dated when TJ was 19 years old. (hide spoiler)]). I am skeptical at first and wasn't sure if I'm going to like this kind of love story. I'm not being judgmental here, it's indeed new to me and you think I'm going to stop reading this? No. Anna and TJ grew on me and ended up loving them. Their relationship is well developed and it wasn't an insta-love. They were awkward at first and I think it's cute and hilarious. I must admit, they do have a great romance story. Actually, everything is beautiful in this book and gave me butterflies. I totally didn't expect it. 
 Anna and TJ simply proved that love knows no boundaries. I'm incredibly touched and emotionally invested with their story. I'm definitely recommending this book. Overall, I really enjoyed it.