This book is tough to review because it's such a misfit. It's a *weird* book, which may be typical of Stein (I've only ever read one other book by her-- the first in this series, Never Loved). It won't be like other New Adult romances and it has its own idiosyncratic mix of good and bad points. 
 The Good: Tate and Letty are really interesting characters and they carry the book. We don't get Tate's POV, but it's obvious why as the book advances. He's got secrets that Stein wants to keep from readers as well as from Letty. Letty's POV is important, but sometimes she's really astonishingly clueless -- not only to Tate's motivations but to her own. I also liked the film studies project they worked on. It was fun to return to their movie-watching scenes regularly and Stein made them really advance the story (easy since they were all about sex on film!). And those sex scenes are wacky. I've never read anything like them and readers will either love or hate them, I bet. I loved them-- in part because of the hotness, yes, but also because they were so creative and risky (for both the characters and the author). Stein is a very gifted writer so there's also lots of good dialogue here, including during sex scenes. 
 The Bad or Less Good: the plot was full of holes and over the top, though less over the top than Never Loved so things are moving in the right direction. I don't even mind over the top plots if they are fleshed out AS IF they were plausible (ie if they work at making readers suspend their disbelief) but this plot sometimes felt phoned in: like now wave your hand to make a mobster appear! not like an actual story line with causes and effects. Similarly, the other characters feel kind of skimpy though that's probably because of Stein's intense focus on the couple, who really make or break the book. 
 In short, if you want to try something new, very hot, and maybe a little odd, it's definitely worth starting here. For me all the great stuff overwhelmed the bad and I was hooked and impressed.