Cowgirl Education by Jillian Neal

Former British rockstar, Declan St. James knows sex and he knows women. What he doesn’t know is how to stop running from his past mistakes.
Holly Camden can’t seem to balance her wild cowgirl side with her quest to become a psychologist.
When they meet, he sweeps her off her boot-blistered feet and into his arms with a promise to teach her all of the finer points of making love (the dirtier the better.)

And with one scorching kiss, Holly knows it isn’t balance she needs. It’s him.
Only one problem – Declan is also Holly’s human sexuality professor. And there’s much more on the line than an academic code of ethics.
No one can know they’re together. Drawn to one another with magnetizing force, they cannot stay apart.

If they’re found out, his career, her education, his citizenship, everything she’s worked so hard for, and his last chance to succeed at something that might take away all of the pain he inflicted in his youth go up in flames.
But the lessons Holly requests are more than he could ever deny either of them.
Will the fire burning between them be enough to make it worth everything that could be destroyed when their relationship is discovered?