***ARC received from author in exchange for honest review.
3.75 to 4 stars.
I'm a little all over the place on this one. Jackson and Ronnie had insta-lust and chemistry to spare. For some it may be way over the top lust/chemistry because they're like bunnies at times. The sex is explicit so if that makes you uncomfortable then take a step away from the Kindle/iPad/ereader.
Jackson, the H, is a dog, a pig, any other animal name you can think of to describe a man whore. That said he does has some redeeming qualities - passion, humor, quiet sensitivity, compassion - that are not as in your face. I wouldn't quite say we get to his hidden depths but he is quite the charmer in his own over-the-top way.
Ronnie, the h, seems like a goody-two-shoes but when she's with Jackson in private or public, all bets are off (and clothes too). One paragraph she'd be focused on her career and steering away from Jackson because he wasn't good for her career, the next she'd be focused on banging Jackson anywhere and everywhere.
There is definite sexual chemistry between the 2 MCs. There were instances and glimpses of emotional chemistry but that was slower to develop and less detailed. IMHO there was more emotional growth in Jackson than Ronnie but it wasn't a strong focus of the book either. I would have rated the book a strong 4 stars if the emotional chemistry/growth matched the physical chemistry/lust.