"We have fun and we enjoy each other's company, so why shouldn't we just move in together?"--Lauren, from Cohabitation Nation

Living together is a typical romantic rite of passage in the United States today. In fact, census data shows a 37 percent increase in couples who choose to commit to and live with one another, forgoing marriage. And yet we know very little about this new "normal" in romantic life. When do people decide to move in together, why do they do so, and what happens to them over time?

Drawing on in-depth interviews, Sharon Sassler and Amanda Jayne Miller...

"We have fun and we enjoy each other's company, so why shouldn't we just move in together?"--Lauren, from Cohabitation Nation

Living together is a typical romantic rite of passage in the United States today. In fact, census data shows a 37 percent increase in couples who choose to commit to and live with one another, forgoing marriage. And yet we know very little about this new "normal" in romantic life. When do people decide to move in together, why do they do so, and what happens to them over time?

Drawing on in-depth interviews, Sharon Sassler and Amanda Jayne Miller...