I think that even when I graduated from college - 1993 - there was a bit of a social stigma attached to shacking up. Obviously lots of people did it, but there was a bit of "scared to tell my parents" still in there.
Things change.
Three of four women in the U.S. have lived with a partner without being married by the age of 30, an increasing trend that suggests cohabitation is now a regular part of family life in the U.S., researchers said.