Wow, there is some serious asshattery on the part of the male lead in this one. Supposedly he only sleeps with women who "know the score" but when he tells Bayleigh "the score" she says several times she doesn't agree with his terms and he seduces her anyway. Certainly some of the fault still lies with Bayleigh, but for her part, she did seem to try to stay away from him, knowing that he would break her heart and she wasn't cut out for his kind of "relationship" (and I use the term loosely). On that note, I had a hard time distinguishing between the "hero" and the mega-date-rape drug he was trying to stop. 1) Both are applied through an unsolicited (and I could argue, unwanted) touch; 2) both cause insatiable lust in the woman, who 3) can't seem to control herself from having sex with the man who administered the touch, and most tellingly, 4) neither seems to care about the woman's emotions in all this.
For the record, I'm all about alpha heroes, but when a woman you're trying to screw repeatedly tells you she does not agree to your emotional terms when it comes to sex because you will hurt her, no matter how good you think the sex is, you back off until one of you changes your mind. In most romances, the woman has some (usually flawed and/or ridiculous) reasoning that causes her to think she can handle it emotionally or that the end result will be worth her emotional trauma, but Bayleigh doesn't do that. She asks Case repeatedly to back off, and despite knowing that he's putting a drug cartel-related target right on top of her head, proceeds to seduce her every chance he gets.
Oh, and speaking of the cartel, I'm still pretty unclear about why Cade felt the need to involve Bayleigh in the first place. Did he figure since he knew her brothers, she'd somehow manage to transform into Wonder Woman and take care of herself if she got kidnapped? And why could he not have found someone willing and agreeable to being used as bait, someone who knew what kind of danger she was getting into by being seen with him? Are there no females anywhere in law enforcement? And that leads me right back to Cade's asshattery. He knowingly put her in a situation where she could easily be hurt (or killed) and didn't give her a choice in the matter.
Come to think of it, that sounds a lot like their personal relationship too.