In their own brief conversations, he had the distinct impression that she was toying with him, verbally challenging him to a duel that she was certain to win, for she established the rules and kept them a secret from him. As perplexing as this was, he found her game engaging, and he inexplicably wanted more of it.

She was convinced that she could have been happy with him, when it was no longer likely they should meet.

Elizabeth laughed and pushed her father's shoulder. "Go, Papa, and be kind to him. I love him so. And it would be to your advantage to be on his good side."
Mr. Bennet raised his eyebrows. "Oh, and why is that?"
Because I have seen both his libraries in London and at Pemberley, Papa."
Interested and amused, Mr. Bennet said, "Ahh, and are they very grand, Lizzy?"
A more exquisite sight you will not see," she assured him.

They parted at last with mutual civility, and possibly a mutual desire of never meeting again.

My object then," replied Darcy, "was to show you, by every civility in my power, that I was not so mean as to resent the past; and I hoped to obtain your forgiveness, to lessen your ill opinion, by letting you see that your reproofs had been attended to. How soon any other wishes introduced themselves I can hardly tell, but I believe in about half an hour after I had seen you.

So what do you think, Miss Bennet? Will you come to Pemberley?" He Spoke quietly over her shoulder; she hadn't realized he was so close. Feeling a mischievous impulse, likely from her nervousness at his proximity, she said the first thing that came to her mind.
"It is tolerable, I suppose, but not hadsome enough to tempt me."
Mr. Darcy's face went from shocked and angry, to hurt and confused, and finally to understanding as her words sunk in.