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It has been suggested that this article be merged with Open marriage relationship, Open marriage styles, Open marriage acceptance, Open marriage incidence and Open marriage jealousy to Open relationship.
The parents usually have an income that allows them to be upper middle-class. In Season Four, Nanny Yvonne did not appear due to budgetary reasons and the format changed.
Rather than showing a clip to the nannies then deciding which one would go, Lillian just called one of them and sent them to the family.
The introduction features montages of several clips of unruly children (and the nannies' surprised reactions), whereupon stock footage shows a "call" being made to Nanny 911 where "Head Nanny Lilian" (Lilian Sperling, featured as "Nanny to the British Royal Family") answers "Nanny 911" (on an old rotary dial phone).
Nena O'Neill and George O'Neill changed the meaning of the term with the 1972 publication of their book Open Marriage, which sold over 1.5 million copies.
The O'Neills conceived open marriage as one in which each partner has room for personal growth and can develop outside friendships.
(Discuss) Open marriage typically refers to a marriage in which the partners agree that each may engage in extramarital sexual relationships, without this being regarded as infidelity.
There are many different styles of open marriage (such as swinging and polyamory), each with the partners having varying levels of input on their spouse's activities.
These concepts entered the cultural consciousness and the term "open marriage" became a synonym for sexually non-monogamous marriage—much to the regret of the O'Neills.