This one is at the top of the smut list for the year. Or possibly any I've ever read.

Ella/Holly just broke up with her cheating boyfriend and is left with a mountain of debt. Struggling to make ends meet, she reaches out to an online friend about her "entertainer" job. Ella is already into many kinks, so this seems right up her alley. After her interview, she is hired, but only a little of the naughty list is available until she gets some reviews. She chooses Holly as her "entertainer" name (which is just a fancy name for call girl) and starts. Her engagements start at the bottom, pretty vanilla, but with each 5-star review, she gets to add to her naughty list.

You name it? It's probably in this book. ALL.THE.KINKS. And it is SPICY beyond spice. Phew.

5+ stars on the smut, overall 4. Not really a romance, although there is a little hint of it at the end in an HFN ending.