佳偶天成：
an ideal couple

百年琴瑟：
married couple for a hundred years

百年偕老：
(of a married couple) to stick to each other for a hundred years

花好月圓：
the flowers are in full bloom, and the moon is full---ideal time for wedding

福祿鴛鴦：
a happy wealthy couple

美滿良緣：
a happy and wonderful marriage

夫唱婦隨：
the man sings, the wife follows ---?domestic harmony

珠聯(lián)璧合：
an excellent match

鳳凰于飛：
a couple of phoenixes on the wing---happy marriage

美滿家庭：
a happy family

琴瑟和鳴：
marital harmony; happy married life

相敬如賓：
(of a married couple) to respect each other as if the other were a guest

同德同心：
to be of one mind

宜室宜家：
to make a harmonious and orderly home breath

白頭偕老：
(of a married couple) to stick to each other till the hair turns gray

情投意合：
to be congenial; to agree in taste and temperament

花開(kāi)并蒂：
a good marriage

美滿良緣：
A happy and wonderful marriage

鸞鳳和鳴：
Luan and Phoenix Sing together---Harmony in marriage?

小Car筆記：
domestic harmony：家庭和諧
home breath：家的氣息
agree in：在 ... 一致(關(guān)于 ... 意見(jiàn)一致)