Polyamory — having more than one consensual sexual or emotional relationship at once — has in recent years emerged on television, mainstream dating sites like OkCupid and even in research. And experts who have studied these kinds of consensual non-monogomous relationships, say they have unique strengths that anyone can learn from.

Consensual non-monogamy can include polyamory, swinging and other forms of open relationships, according to Terri Conley, an associate professor of psychology at the University of Michigan who has studied consensual non-monogamy. While there aren’t comprehensive statistics about how many people in America have polyamorous relationships, a 2016 study published in the Journal of Sex & Marital Therapy found that one in five people in the U.S. engage in some form of consensual non-monogamy throughout their lives.

But these relationships can still be shrouded in stigma. And people in polyamorous relationships often keep them a secret from friends and family.

“Often they’re scared of losing their jobs, not getting a job, losing family or friends who won’t respect them anymore or scared that their children will be taken away,” says Carrie Jenkins, a professor of philosophy at the University of British Columbia and the author of What Love Is: And What It Could Be.

Read the full article at Time.