A record number of Americans are single this Valentine's Day. In 2020 and 2021, the marriage rate hit the lowest numbers since the government began tracking it in 1867 - a trend that was well underway before the pandemic. According to research by the Pew Research Center, an unprecedented 25% of 40-year-olds have never been married. Those who are single are far less likely to be living with a romantic partner than they were in 1990.