There's a growing trend in America. According to new federal research, there's a baby boom among unmarried couples who live together.
Births in so-called "cohabiting relationships" rose to 58% between 2006 and 2010. That's up from 41% in 2002.
The report shows between 2002 and 2010, about half of new babies belonging to non-married couples living together were planned.
The data was collected by the National Center For Health Statistics, which is part of the Center for Disease Control.