This is the chapter where Rochester asks Jane to be his wife. It is ironical that he refers to her as his 'friend' when he obviously considers her more than 'just' a friend. Then, there's the entire confusing dialogue where he, on the one hand, asks her to love him and live with him forever, then turns around and talks about never seeing her again. Lastly, Jane believes that at this point Rochester is speaking about Blanche, not Jane, and so when Rochester speaks of having a bride, she does not know that it is her that Rochester is speaking of.
