You're invited to "The Party"

In the beginning of book two, Julia slips a note to Winston that says "I love you". This note starts a chain reaction all through-out the chapter. When Winston found this out, he immediately wanted to get in touch with her, and eventually did, but when he did talk to her, he found out her view of life and the Party where only vaguely similar to his. When Winston does start talking to Julia on his views of life, or the party, she falls asleep quite easily, like she is only concerned with what she thinks. One thing Julia talks about to Winston is how nearly stopping sex is helping the party control the lives of the people. She says "If you're happy inside yourself, why should you get excited about Big Brother and the Three-Year plans and the Two Minutes Hate and all the rest of their bloody rot?", which shows to the reader that Julia believes in The Party controlling peoples lives, but she also out does herself doing anything involving the party.
Meanwhile, Winston believes in The Brotherhood, revolting, and that all hope lies in the proles. Julia on the other hand, wants to find a way to overthrow the Party, but doesn't want to be involved in it. Also, Winston just believes in doing the bare minimum for the party, and just pushing through each minute, hour, and day. Julia though, pushes herself to, and beyond the limit for helping the party, and does everything she can to get herself noticed, but in a positive way. I guess you can say "opposites attract".