How would life be different if we centered it on our friends? In her new book, The Other Significant Others, Rhaina Cohen visits the extremes of friendship, where pairs describe each other as “soulmates” and make major life decisions in tandem with a friend. We talk to Cohen about the lost history of friendship and why she cringes when couples at the altar describe each other as their “best friend.” Want to share unlimited access to The Atlantic with your loved ones? Give a gift today at theatlantic.com/podgift. For a limited time, select new subscriptions will come with the bold Atlantic tote bag as a free holiday bonus. Learn more about your ad choices. Visit megaphone.fm/adchoices