that it is usual with young ladies to reject the addresses of the man whom they secretly mean to accept
This false adage has persisted throughout literary and human history. The misogynistic belief that men know what women want, and that rejection is an invitation to continue pursuing a woman is prevalent here, and is commonly accepted today. The second half of Charles Chesnutt's The House Behind the Cedars is motivated by two men's pursuit of a woman who has repeatedly rejected them both, and that novel was written 100 years after Pride and Prejudice. In both novels, the men willfully misunderstand the women's desires (or lack thereof), and practically force throw themselves at them. While this seems like a harmless societal trend, it fuels the persistence of sexual violence against women. Not to be a downer, but it is this casual integration of deeply misogynistic practices that subconsciously teaches women to accept mistreatment, and even expect to be mistreated, and allows men to do whatever they want to women, regardless of whether their desires align with theirs. This is the foundation of the "she was asking for it" argument.