Northanger Abbey by Jane Austen Chapter 19 Page 6

“Is it my brother's attentions to Miss Thorpe, or Miss Thorpe's admission of them, that gives the pain?”

“Is not it the same thing?”

“I think Mr. Morland would acknowledge a difference. No man is offended by another man's admiration of the woman he loves; it is the woman only who can make it a torment.”

Catherine blushed for her friend, and said, “Isabella is wrong. But I am sure she cannot mean to torment, for she is very much attached to my brother. She has been in love with him ever since they first met, and while my father's consent was uncertain, she fretted herself almost into a fever.

You know she must be attached to him.”

“I understand: she is in love with James, and flirts with Frederick.”