Rocked Bayou by Erin Nicholas

Ex-bodyguard and moody Irishman, Colin Daly needs three things:
To figure out how to have a real job after his longtime client no longer needs him.
To find some really good Irish whiskey in the land of homemade moonshine.
To stop having dirty dreams every time he hears young, beautiful, recently-discovered-thanks-to-social-media music sensation, Hayden Ross, sing. Which seems to be every time he freaking turns around lately.
But now the new-to-the-spotlight sweetheart is being harassed and needs someone to have her back. And Colin will be damned if he’s going to let anyone else take this job. No matter how much being her temporary, very protective pretend boyfriend/roommate/whatever is going to rock his world.