Alfie, honest mistresses are lauded; 
The presents they receive they earn, but you, 
Who lead me on with lies, leave me defrauded. 
My anti-mistress, brazen what you do; 
You keep my gifts but, suddenly demure, 
Renege on my reward.  Either be chaste 
Before accepting fees or be the whore 
That you pretend, your total body placed 
Where just your mouth is.  Greed and 'virtue' make 
Strange bedfellows, each sure the other's fake.
David Berman
http://www.poemhunter.com/poem/catallus-cx-a-translation/