It is quite amusing for us, as unconcerned observers, to see Elizabeth acting just like Darcy, but not beeing able to credit his behaviour to his love for her, isn`t it ...

"..a smile of delight added lustre to her eyes, als she thought for that space of time that his affection and wishes must still be unshaken. But she would not be secure. "Let me first see how he behaves", said she; "it will then be early enough for expectation." She sat intently at work, striving to be composed, and without daring to lift up her eyes, till anxious curiosity carried them to the face of her sister ...Elizabeth said as little to either as civility would allow, and sat down again to her work, with an eagerness which it did not often command. She had ventured only one glance at Darcy.
Darcy, after inquiring of her how Mr. and Mrs. Gardiner did, a question which she could not answer without confusion, said scarcely anything...Several minutes elapsed without bringing the sound of his voice; and when occasionally, unable to resist the impulse of curiosity, she raised her eyes to his face, she as often found him looking at Jane as at herself, and frequently on no object but the ground. .. She was in no humor for conversation with anyone but himself; and to him she had hardly courage to speak.... Elizabeth dared not lift up her eyes. How Mr. Darcy looked, therefore, she could not tell.
Afterwards she thinks:" He could be still amiable, still pleasing to my uncle and aunt when he was in town; and why not me? If he fears me, why come hither? If he no longer cares for me, why silent?"
If written from Darcys point of view, we would get exactly the same thing - why is it, neither of them dares to guess, that they are acting just alike..