And the answer to that question is, A Very Merry Chase, a Regency romance by Teresa Thomas Bohannon. Here's the back cover blurb. (Well, this is an e-book, so it has no back cover, but here's the blurb from Goodreads):
Set in early 19th century Regency England, and harking back in style to the heyday of Georgette Heyer and Barbara Cartland, A Very Merry Chase is a comedy of manners and errors that boasts empire fashions, dashing characters, verbal sparring matches and witty repartee mingled with just a hint of mystery, danger and intrigue.
I won this book in a giveaway some time ago and have been looking forward to reading it. Stop by on Tuesday and I'll share a Tuesday Teaser with you!