The title came from Christopher Marlowe's poem "The Passionate Shepherd." It begins, "Come live with me, and be my love..."
Hedy Lamarr may be the only screen actor to be in the National Inventors Hall of Fame. She was inducted in 2014 along with former Hollywood composer George Antheil. At the start of World War II, the two invented a frequency-hopping technique that could be used by the Allies to prevent jamming of torpedo guidance systems. Apparently, it wasn't used by the U.S. until 1962 but later became an important aspect for wireless communications. The inventors received no compensation for their discovery. The original 1942 patent expired, and the technique became part of the public domain.
Film debut of Adeline De Walt Reynolds at the age of 78. She would continue her career in film and television for another 20 years until her death at age 98 in 1961.
When Bill gets a beer to drink, it's in a cone-top can. These cans were invented in 1935 as an answer to flat-top cans that were invented the same year. Cone-tops were sealed with the same bottle cap used on bottled beer, so they were popular with small breweries that could fill them with the bottling equipment they already owned. Metal rationing during World War II put a stop to metal beverage cans until after the war.
Bill's mirror reflection responds to his suggestion that Johnny is lonely by laughing sarcastically into the sleeve of his bathrobe. To "laugh up your sleeve" means to hide your amusement about something to avoid causing offense.