There’s a lot to be said for a fluffy inanimate dog.  Found here

Teenage couple on Hudson Street, N.Y.C. 1963 seen here

Formerly teenage couple taking a coffee break presented at Christies.

Two friends discussing sheet issues, also seen at Christies

Blaze Starr and a little white mammal, found here

Two twosomes, in paper masks

Horizontal twosome, outdoors, with offspring.

A royal couple, recently crowned.

Above 3 and more from here.

A couple of gals all dolled up for lunch in the city. Photo at the MET

“Albino sword swallower and her sister”  1970.  By golly it is.  Seen here

They won trophies as a couple before they were 12, but within two years they won’t even say Hello to one another.   From here

Some twosomes have a back-up in case of illness.  photo seen here.