On a Wild Night (Cynster Novels) 
Where are all the exciting men in London?
After spending years in the glittering ballrooms of the ton, Amanda Cynster is utterly bored by the current crop of colorless suitors. Determined to take matters into her own hands, one night she shockingly goes where no respectable lady ever should, but where many an intriguing gentleman might be found.
But titillating excitement quickly turns to panic when Amanda discovers she's quite out of her depth. She looks around for help -- and is unexpectedly rescued by the Earl of Dexter. Lean, sensuous, and mysterious, he has delayed re-entering society, preferring instead a more interesting existence on its fringes.
He's the epitome of the boldly passionate gentleman Amanda has been searching for, but although his very touch makes it clear he's willing to educate her in the art of love, Amanda has to wonder if such a masterful, lionized rake can be sufficiently tamed into the ways of marriage.
Reviews
The characters have no depth--in fact, I think Laurens drew them on cardboard and cut them out--and the murder plot involves everyone being guilty because they ALL look like Martin to Amanda (Everybody sing "You are Everything and Everything is You" now.). In fact the only deep thing in this book is how deep, deeper, and deeper still Martin plunges into her during those long, boring sex scenes. For God's sake, is this girl bottomless or something? YEESH!
If nothing else, this book is a great example in how NOT to write a novel, and the fact that this Bar Cynster series has gone on way too long is proof positive that even the most stagnant, unoriginal authors can keep getting work. Great news for a late blooming upstart like yours truly. For more depth of character, I suggest old Dick and Jane books.