“What felicity it is to hear a tune again which has made one happy! – If I mistake not that was danced at Weymouth.” She looked up at him for a moment, coloured deeply, and played something else.

– Jane Austen

Emma, Chapter 28. When Frank asks Jane to play a waltz on the piano, she obliges by playing one that has a special meaning for them both. He fondly recalls it as a tune they danced together to at Weymouth, while Jane blushes in response. The flirting that goes on between Frank and Jane in this scene hints of them being lovers, foreshadowing the later revelation of their secret engagement.