Read it through once

This was all overheard by Miss Dashwood; and in the whole of the sentence, in his manner of pronouncing it, and in his addressing her sister by her Christian name alone, she instantly saw an intimacy so decided, a meaning so direct, as marked a perfect agreement between them. From that moment she doubted not of their being engaged to each other; and the belief of it created no other surprise than that she, or any of their friends, should be left by tempers so frank, to discover it by accident.