All in all, this is an entertaining book. The idea that Addie is able to see two different realities of her own future terrifies me. I would hate to have such an ability, especially if your visions show you that your life is going to be bleak no matter what choice you make.
I like all of the characters and think there's a lot of potential to expand this story. However, I don't think the book was given an adequate resolution. I felt it ended in the middle of the story and I would much rather read a complete 500-600 page novel than a shorter, incomplete story. Not every book needs to have a sequel or be turned into a series.