1984 Section One, Part VI Analysis (pp. 63-69)
by George Orwell

This section recalls Winston's main sexual experiences, both with a prostitute and his wife, in order to show how much the Party represses the sexuality of those it governs. Winston notes this repression often leads to some kind of physical expression, which can get a Party member denounced and executed. It is this very repression that finally betrays Parsons in his sleep, and he is a devout Party member. Also, the fact the reader doesn't learn about Winston's wife until now demonstrates how unimportant she is to Winston. She is essentially as important to him as the prostitute.