Although there are 105 million singles in the United States today, representing one-third of the U.S. population, these women and men have gone largely unstudied,  even as their attitudes and behaviors are shaping America’s cultural norms and challenging traditional foundations.

Finally Match.com has produced a groundbreaking study of single Americans, offering a radically different population compared to 50 years ago, when the median age of first marriage for women was 20 and only 10% of women ages 25-29 were not married.

Singles today are defying gender and age stereotypes, adopting new dating habits, and changing the very definition of relationships.

Here’s a summary of their findings.