I think it is fantastic how Jane's feelings for Bingley, mirror Lizzy's feelings for Darcy in Chapter 55. The only difference is that everyone knows how Jane feels, whereas no one knows how Lizzy feels.
In response to Jane's query " But why should you persuade me that I feel more than I acknowledge?" Elizabeth says: " That is a question which I hardly know how to answer. We all love to instruct, though we can teach only what is not worth knowing. Forgive me; and if you persist in indifference, do not make me your confidante."
Jane's expressions and actions throughout the party confirm to Elizabeth that she adores Bingley. Yet Jane refuses to admit to this. Lizzy is driven to distraction with her feelings for Darcy, yet no one knows-- or could even guess...
It's ironic that she wants Jane to be forthright about her feelings, when she, herself cannot be that way...