Caroline+and+Jane's+Relationship

There's always been something corrupt about Caroline Bingley. Throughout the story, you begin to discover her inner intentions and her true two-faced personality. You begin to notice her unpleasant personality when you witness her obsession with Mr. Darcy. She is always talking down about Elizabeth to Mr. Darcy, and always calling her out on her flaws and mistakes. At the beginning of the book, when Jane and Bingley met at the ball and afterwards, Caroline was very sweet to Jane, talking to her about Bingley, and how much she approved of their relationship.

After Bingley left Netherfield for London, however, something changed. Bingley had left Jane behind, and so had his sister. When Jane went with Mrs. Gardiner to London, she came across Caroline, who was very dismissive and seemed to not be too happy with her presence.

There are two ways to look at this, however. Mr. Darcy had told Bingley to give up on Jane, as he believes that they would be a bad match, and that Jane is not interested in Bingley romantically. It is perhaps because of Mr. Darcy's reasons that Caroline may dislike Jane for "leading on" Mr. Bingley. There's also the fact that Caroline has that obsession with Mr. Darcy, and believes he always knows what's best and is absolutely right about everything in the subject.

Or, it could simply be Caroline herself, being the two-faced girl that she is, she may not have ever liked Jane much, she was just happy for her brother and forced herself to get along. It's common for Caroline to have false emotions to please others, and this may be one of those times.

I don't really know anything for sure, as I haven't finished the book. That's just how I summarize the relationship between Jane Bennet and Caroline Bingley. It is without a doubt, however, that Caroline is to blame for the sourness of it, as Jane has never had the attention of angering or annoying anybody, she just wants to love Bingley.