The book is called "Summer in the City" by Robyn Sisman. It's pretty good. I had actually seen this movie on TV, and thought it was pretty cute. (I like Rob Lowe, I think he's underrated as an actor). ANYWAY, I had read another book by this author, "Weekend in Paris," and picked this one up not even realizing it was the basis for the TV movie. The movie keeps the two main character's names, the advertising agency, the co-worker sabotaging the Rob Lowe character--the basic plot, but the details differ somewhat (such as the ad account that is jeopardized). It was a cute movie, and pretty good read as a book. If you like "chick-lit."