关于甜蜜家庭的英文谚语有以下几种表达：
家是他们的天堂：
home is a paradise for them.
家有敝帚，享之千金：
have our broom, enjoy the daughter.
让礼一寸，得礼一尺：
let the ritual one inch to one foot.
克勤于邦，克俭于家：
work hard at state affairs, save at home.
不理家务事，不知生活难：
ignore housework, do not know life is difficult.
愿作鸳鸯不羡仙：
I prefer to share my life with you rather than lead a lonely and immortal life.
养儿防老积谷防饥：
Raise children to provide for one's old age and to have provisions for food in times of need.
没有地方比得上家：
There’s no place like home.
这些谚语从不同角度表达了家庭的重要性和家庭生活的甜蜜，可以根据具体情境选择合适的谚语来表达。