This is the first book I've read by Nadia Lee, and I have to say I really enjoyed it. I got an advanced copy of Four Weeks Till Forever, but the title was changed to The Billionaire's Counterfeit Girlfriend after. The title change was a good thing because it matched the premise of the book much better. Mark Pryce needs a date to his family's Fourth of July picnic because he doesn't want to be set up by his mom. Hilary Rosenberg, his best friend's administrative assistant, is the perfect choice. She knows all about his reputation as a playboy and won't get attached. Hilary doesn't believe in love. She came from a messed up family, where her father slept with her mom and her aunt and got them both pregnant at the same time. Hilary has worked hard to get herself away from the reputation of being a Rosenberg girl and the wild things that they are known for. Mark doesn't know about Hilary's past and she wants to keep it that way, but the past has a way of coming out. Neither Mark nor Hilary expect to want more than the month they had planned, but they both end up wanting more, even if Hilary doesn't believe Mark when he says he does. My favorite part of the story was how Mark went about proving to Hilary that he is serious about her and she's not one of his Quarterly Girls. The book was long enough to be satisfying, but not so long that it felt forced. I give this book a solid 4 stars and can't wait to read more from Nadia Lee.