Step 1 : Introduction to the question "What was the first television series to show a married couple sleeping in the same bed?"
The first television series to show a married couple sleeping in the same bed was Mary Kay and Johnny, which aired from 1947 to 1950. This sitcom followed the lives of real-life married couple Mary Kay and Johnny Stearns, who portrayed fictionalized versions of themselves. As an early, groundbreaking show, it broke the conventions of the time by depicting the couple in a shared bed, a rare sight on television due to strict content standards of the era. Later shows like I Love Lucy still separated married couples into twin beds, making Mary Kay and Johnny a significant outlier in television history.