The sexual connection between Julia and Winston begins in this chapter.
It is not romantic, it is more a quest or rebellion. For them, to form this alliance outside of The Party is an act of revolution. Physical connection and sensation, emotions are just confetti. .
In Nineteen Eighty Four, engaging in sex, is a revolutionary act,
Winston and Julia seem aware of how pathetic their abilities to confront the regime under which they live. Escaping to the forest to engage in sex is as significant as tearing a tag off a mattress.
Julia is far less constrained the Winston, and speaks strongly against the Party.
She had engaged in meaningless sex with men many times. As a member of the Junior Anti-Sex League, with a red sash wrapped around her waist, she appears fully indoctrinated.
Where Winston stays to the sidelines so as not to gain attention, to slip in as a blur, Julia makes herself seem a die hard Party Supporter.