Although I did have some issues with the book such as Ethan falling in love so quickly after returning home and the ending, I still liked this book. The concept really captivated me and I felt invested in this book. So much so that I finished in it within a couple of hours because I desperately wanted to know the ending.
BUT! When the ending came I hated it. I knew what the outcome would be pretty early on and I wanted to know how it would be dealt with. I'm not against open endings since sometimes they can work really well for a piece but this was not one of those times. It could've been executed a lot better