Total Surrender — Cheryl Holt

He was a master in seduction...
With the last of her family's possessions gambled away by her dissolute brother. Lady Sarah Compton has traveled to a country house gala for one last moment of grace and beauty. But she is unaware that the occasion is actually a notorious trysting event, where members of the aristrocracy can indulge their every sensual fantasy and erotic whim. Nor does she realize that the striking man who has stolen into her bedroom is none other than Michael Stevens -- a rake who gives and takes his pleasures boldly....

She was a pupil, willing to learn...
The bastard son of an earl, Michael Stevens relishes his reputation as London's most notorious seducer. But he has no idea what to make of the auburn-haired beauty he'd nearly mistaken for a new conquest or how such an innocent could possibly have been invited to a gathering where London's bored elite caters to each other's carnal desires. When the lady refuses to heed Michaels' warning -- to leave the house for her own protection -- a powerful attraction grows, and soon, he longs to tutor the very proper Lady Sarah Compton in the art of passion...