Summary

Portrait of Lillian Eichler Lillian Eichler Book of Etiquette, Volume 1, Part 1… (1921)

To be modest, gracious, dignified during the engagement, to continue one's social duties faithfully, neither neglecting one's friends nor becoming self-consciously enthusiastic, to be self-possessed and unaffected even while one is the center of much lively interest and animated discussion—this is the end to be desired, and the young man and woman who have accomplished it are indeed fortunate.
Source: Wikisource

Portrait of Lillian Eichler Lillian Eichler Book of Etiquette, Volume 1, Part 1… (1921)

The young couple should conduct themselves with quiet dignity and reserve, neither indulging in terms of endearment or caresses, nor purposely ignoring each other so as to create the impression that they are not, after all, so very much in love. There is no reason why their conduct in public after they are engaged should be any more demonstrative than it was before.
At parties, dinners, and other entertainments it is their privilege to be with each other more than they are with anyone else, but this does not mean that they should neglect the other guests.
Source: Wikisource

Portrait of Lillian Eichler Lillian Eichler Book of Etiquette, Volume 1, Part 1… (1921)

It has always been a popular custom in better society to give the announcement of an engagement as nearly an appearance of "leaking out" as possible. Perhaps it is because it adds to the interest of the occasion. To obtain this effect, a number of intimate friends and relatives are invited to a dinner party—really the engagement dinner—where, in the course of the conversation, the news of the engagement is casually imparted to the guests for the first time.
Source: Wikisource

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