Adults ages 18 to 34 are more likely to live in their parents’ home than with a partner or spouse in their own arrangement, according to a new Pew Research Center study.

This is the first time this has occurred in 130 years and seems to be fueled by a drop in Americans committing to romantic relationships before the age of 35, according to the study. A separate Pew study found that one in four young adults are predicted to never marry, and this is likely one of the causes for their long-term living arrangement with parents.

In 1960, approximately 62 percent of Americans in this age range lived with a significant other and only one in five lived with their parents. This shows quite the difference from the new 2014 data.

Another interesting finding in the study is that millennial men are more commonly living with their parents — about 35 percent — than women, who are only at 29 percent. Shifts in marital status, educational completion, and careers all impact this shift to living back home with Mom and Dad.

For more information on shifting cultural patterns, click here.