Honestly I loved it. At first tho it caught me off guard with it's graphic detail of each seggs scene. I thought it might not be as romantic as I thought. However, I was highly mistaken. To me it was quite the love story. I do only recommend for mature adults. (I wouldn't compare it to fifty shades of grey really, except for the extensive emphasis on the sexual part of the relationship and the "sincere love" part of the last movie of fifty shades of grey) that's the best way I could explain it without spoilers. (I'm not a big fan of fifty shades of grey tbh) I do really love this book because it's not only about a sexual relationship, there is action and it's an apocalyptic romance novel all in one.