Samuel Richardson 
Clarissa 
The History of a Young Lady (Complete Vol 1-9)

The following History is given in a series of letters, written Principally in a double yet separate correspondence; Between two young ladies of virtue and honor, bearing an inviolable friendship for each other, and writing not merely for amusement, but upon the most interesting subjects; in which every private family, more or less, may find itself concerned; and, Between two gentlemen of free lives; one of them glorying in his talents for stratagem and invention, and communicating to the other, in confidence, all the secret purposes of an intriguing head and resolute heart.