"My dearest sister, now be serious. I want to talk very seriously. Let me know everything that I am to know, without delay. Will you tell me how long you have loved him?”
“It has been coming on so gradually, that I hardly know when it began. But I believe I must date it from my first seeing his beautiful grounds at Pemberley.”
Another entreaty that she would be serious, however, produced the desired effect; and she soon satisfied Jane by her solemn assurances of attachment.
"Jane Austen, Pride and Prejudice