Books like Rules For Being A Mistress
Tamara Lejeune
Rules For Being A Mistress is 384 pages, about 7 hours 2 minutes at 250 words a minute.
12 books to read next
How long each takes
To Seduce a Bride 7.7 h 
One Sinful Night 6.5 h 
The Corinthian 4.5 h 
April Lady 4.9 h 
The Ugly Duchess 6.9 h 
Where the Crawdads Sing 7.6 h 
Mystique 6.2 h 
The Watsons 3.2 h 
Simon the Coldheart 5.3 h 
The Grand Sophy 6.3 h 
Ransom 10.0 h 
Duchess By Night 7.2 h Bar height shows length. Estimated at 250 words a minute.