“Undoubtedly, there is meanness in all the arts which ladies sometimes condescend to employ for captivation. Whatever bears affinity to cunning is despicable.” – Mr. Darcy

Basically Miss Bingley thinks she is quite the smooth talking seductress hitting on Mr. Darcy. He, however, sees caroline for her true self. I don't think Ms. Caroline quite understands Mr. Darcy because she just keeps trying.