Fournicopia by Delilah Devlin

Forget the sugar. Send her the spice.

Gus Taggert knows a setup when he sees one. The doughnut shop his police officer buddies have sent him to, Cornucopia, is too frilly, too pink. Then the woman behind the counter serves up a mini-lesson in submission that leaves him ready and willing to obey her order to see her tonight at La Forge BDSM club.
The large, burly cop is exactly the kind of alpha guy that newly minted Domme Aislinn Darby has been dying to tie up and spank. Yet after she puts him through his paces, she finds herself eager to let him take control—something she’s never before enjoyed with a man.
Determined to find out once and for all if she has what it takes to control a scene, she orders him up for one more go. Only this time, she intends to ensure he remembers who’s in charge. She’s even willing to offer a little bribe: accept her dictates, and his reward is her—any way he wants her.

Except when it’s time for payback, it comes with several twists she never sees coming.