What's the most raunchy romance novel you have ever read?

Question

What's the most raunchy romance novel you have ever read?

Answer 1

book called choke by the author of fight club, it has some nasty s*x scenes, or chapters, what ever you call a part of a book.  

Answer 2

I wouldn't call Chuck Paulinauk's "Choke" a romance novel.

But I did read part of my aunt's romance novel once.  I can't remember the name, but here's the summary (prepare to laugh):  A girl named Kelsey sold herself to a handsome British knight in order to give money to her sister.  This takes place in modern time, so I don't know what a hot guy needs with a s*x slave, but whatever.  So this Sir Derek guy takes her to cocktail parties and social gatherings, but then does freaky stuff at night.  That's as far as I got before I quit reading.  The s*x scenes were really funny, and I liked how they were written ("heaving" in every line).