I did not like this book, but the surprise ending - Steven's statement to Serena at the end - made me give it one additional star.
The writing style is smooth, and free from grammatical boo boos. It was also interesting to see an interracial couple, which is typically not done in most romances, zombie or otherwise. These are the only things I can say I liked about this story.
As a zombie story, there was a lot left to be desired - like, you know, zombies, for one. For a post-ZA world, our intrepid couple ran into a total of two, yes two!, zomibes while travelling from California to Nevada. And of course, both of these two zombies were miles apart and isolated. So, where did the rest of the 3/4 of America's zombified population go? No clues are found in this book.
As a romance story, there was also a lot left to be desired. The romance read more like a happy rape scene - Serena is terrified, and Steven is an egotistical megalomaniac. The whole thing with pregnancy was just out there and didn't make any sense to me.
So, aside for the lovely one-liner ending that piqued my interest, this is a book I would take a pass on.