In the second installment of our year-long series, Under the Radar dives into the world of polyamory and ethical nonmonogamy ...

Kendra Pierre-Louis: For Scientific American’s Science Quickly, I’m Kendra Pierre-Louis, in for Rachel Feltman. For many of us, our mental picture of romantic love is a couple. After all, a firmly ...

This third and final blog in a series explores what makes for a resilient traidic relationship. The first blog explained why threesomes are the most common form of consensually monogamous group ...

Polyamory is a type of consensual nonmonogamy where people have more than one partner at a time. Unlike cheating, polyamory is based on open communication, trust, and mutual agreement among partners.

Here's what happened when I let my boyfriend talk me into a polyamorous relationship and found myself in love with two men at once. I’ve never been particularly traditional, especially when it comes ...

As non-monogamous relationships become more common, many people are wondering whether it’s wise to take their friendships to the next level, specifically, by adding romance and polyamory into the mix.

Sometimes, all a relationship needs to stay strong is to break the rules. A Florida husband and wife celebrating 20 years of marriage say they did not save their relationship by playing it safe.

According to data from YouGov, 1% of the UK population are currently in polyamorous relationships and 8% would be open to being part of one. For clarity, this means that 680 thousand people are in ...