This review is based on the first 40% of the book only--so I might be missing out on any improvements in the latter part of the story.
As others have noted, this book is completely overrun with typos--there has to have been a problem converting the uploaded files to Kindle format (which was then not proofread), because I can't believe that anybody would be so lax as to let something like this through. In many cases, I saw several problems on a single page.
There are also editing errors--the first soon-to-be ex character, Tim, is later referred to as Chris at least once, but Chris is the new person. That's a simple error (both to make and to detect given proofreading). I noticed several similar examples in the first part of the book. Tenses change without warning or justification.
All of these issues can be overlooked, and if you can do so and like the story, it might be okay. I found the story itself to be problematic, too. I thought the characters were vapid and their reactions to various events were exaggerated (squealing at the sight of a bag of potato chips--even given the situation depicted? Seriously?). Both characters used expletives liberally when both thinking and speaking (actually, they mostly used one word to extreme excess). As can be seen from the other reviews, however, many people liked the story, so maybe I'm overly critical. No single factor motivated my decision to abandon this and write a two-star review. I lost interest after the accumulation of too many errors and other problems.