After a honeymoon in Georgia, the newlyweds set up housekeeping in Washington.
Usage notes: often said about two people who are just starting to live together
set up housekeeping
To move in together and create a home as a couple. Getting married was a cornerstone of social standing not too long ago, but many couples now are opting to set up housekeeping without the formality of marriage.
set up housekeeping
Move in together, as in Couples today often set up housekeeping long before they marry. [Mid-1800s]