Gentlemen in his station are not accustomed to marry their governesses.

– Charlotte Bronte

Jane Eyre, Chapter 24. Mrs. Fairfax is very surprised that Jane is to be married to Mr. Rochester. The Thornfield housekeeper cautions Jane to keep her distance from Mr. Rochester and not trust herself or him, as it has not been practice for men of his class to marry their governesses. She is suggesting that Mr. Rochester’s feelings may not be genuine.