4.5 stars 
 This book kept me continually amused and entertained. The Vegas scenes, especially, were full of humor and a lightness that left me forgetting that at some point there would be some kind of conflict. 
 It didn't take me long to fall in love with Ansel. I think I loved him before we had really even met him. He was the perfect gentleman, with a mischievous streak. Sweet and impulsive, he drives many of the early decisions that cause this story to move from Vegas to Paris. 
 Of the three women introduced at the beginning of the book, Mia is the quiet one. She is the introverted observer to her friends' outgoing off the wall personalities. But something about Ansel makes her lower her walls and she quickly finds herself more comfortable around him than she's ever felt. 
 I was a little bit worried about the "whisks her away to Paris" part of the storyline. The last book I read with an impulsive trip with a stranger came off creepy and would have set off stranger-danger warnings all over the place. That feeling never came in this book. While yes, they were relative strangers, a drunken letter from Mia to herself, a few days to think, and a few other factors combine to make the trip to Paris something completely different and a much needed break from reality for Mia and as it turns out, Ansel too. 
 But that trip to Paris also set up a twist that I didn't see coming. A twist that left me (and Mia and Ansel) wrecked. In a complete turn of emotions, I wasn't laughing anymore, I was crying. (And my family noticed...) But that twist, though gutting, was necessary to make Mia and Ansel face some things that they had been ignoring throughout their summer in Paris. 
 As I have come to expect from books from Christina Lauren, Sweet Filthy Boy kept me on my toes -- laughing, waiting for the other shoe to drop, and then hoping they work it out. But through it all, those bits of humor that filter through the other emotions. I cannot wait to get my hands on the next book in this series, Dirty Rowdy Thing, for more of Finn and Harlow based on the beginnings of their relationship hinted at in Sweet Filthy Boy. In fact, this whole series is automatically on my TBR list now. 
 Thanks to Christina Lauren and Gallery Books for providing me with a complimentary copy in exchange for an honest review. This review is also posted at Reviews by Tammy and Kim.