From Chapter 34:

Mr. Darcy: “…But disguise of every sort is my abhorrence.”
Elizabeth: “…had you behaved in a more gentlemanlike manner."
I think that these two quotes kind of capture Elizabeth and Mr. Darcy's relationship in a nutshell, to this point.

In my opinion, everything Mr. Darcy has done up to now reflects his core value for honesty. He must and always will be honest; true to himself. Unfortunately he sometimes has the wrong information, and can be offensive, acting on that information, and his pride can get in the way, but nevertheless, he remains true to himself. Such a man, with his heritage ("10,000 a year and a large estate in Derbyshire"), has good reason to be proud.

That is why I still like him, in spite of what Wickham has told people. Mr. Darcy has never acted out of character for what I perceive a Regency gentleman should be. Wickham, on the other hand, has told his tale of woe at the drop of a hat, to any one who will listen. This is suspicious behavior to me. We need to know more from/about such a man, before taking what he says at face value.

Elizabeth has jumped to the conclusion, helped along by her prejudice against Mr. Darcy from overhearing his slight of her at the Meryton Assembly, and by Wickham's bleeding-heart story, that he is no "gentleman," even though he has the "10,000 a year..." etc. Every time she has seen Mr. Darcy, she has nurtured her prejudice against him by seeing what he does and says only in the worst possible light.

Like Elizabeth, I know that I am quick to form judgements about people; I expect them to be GOOD, if they are nice and friendly. I know that when someone slights me, it takes some work on their part to repair the damage they have done to my good opinion of them.

I feel that Elizabeth is being reasonable in her unfortunate prejudice. I also feel that Mr. Darcy is being a true Regency gentleman in his honest dealings with people, all the way up to the proposal. Then, he slips off the track and runs crazy! Definitely HONEST, but crazy! Oh well...