Books like Anonymous Sex
Hillary Jordan, Cheryl Lu-Lien Tan
Anonymous Sex is 320 pages, about 5 hours 52 minutes at 250 words a minute.
12 books to read next
How long each takes
The Kama Sutra 3.5 h 
Ruthless People 6.0 h 
Exit to Eden 6.2 h 
My Secret Life 9.4 h 
Vicious 7.0 h 
Tempted 7.3 h 
The Torture Garden 4.1 h 
Big Rock 4.6 h 
Mister O 6.0 h 
Truth;Consequences 9.0 h 
Driven 6.5 h 
The Complete Illustrated Kama Sutra 5.9 h Bar height shows length. Estimated at 250 words a minute.