There have been many great contributions to the world of literature. Gutenberg invented the printing press, Shakespeare invented romantic comedy, and J K Rowling invented Harry Potter. However, all of these achievements pale into insignificance compared to my contribution - the sex index. Seeing a hole, I filled it. Finding a gap, I plugged it. My invention of a sex index at the back of a romance novel is hands down the most exciting new development since the Kindle. So join me, readers and fellow authors, to drill down into what a sex index is, and what it can do for you…