Dukes, Actually by Erica Ridley

The Duke of Azureford isn’t the arrogant, aloof lord his peers perceive him to be. Yes, he’s awkward, but he has a plan to fix it. In order to woo a respectable lady, he must learn how to flirt. The completely inappropriate girl next door would make a perfect instructor, but a terrible duchess. So why can’t he walk away?
Incorrigible hoyden Miss Carole Quincy likes fast carriages, carom billiards, and the beautiful, buttoned-up Duke of Azureford. She’d be delighted to help him out of his shell and into her arms. Who cares if they’re just pretending to flirt? The heady, breath-taking, soul-consuming feeling inside her runaway heart surely can’t be love…