A few months ago, I blogged about a new study showing that Americans’ interest in consensual non-monogamy (CNM) is on the rise. In this study, social psychologist Amy Moors analyzed Google search trends in the United States between 2006 and 2015 and found that searches for terms related to polyamory and open relationships increased across the decade. At the same time, though, searches for another form of CNM, swinging, decreased. Since then, I’ve been pondering what the latter means. Why aren't people searching for swinging as much as they used to? I can't say for sure, but here's what I suspect: some of the interest in swinging has been replaced with interest in cuckolding.

I have some evidence to support this idea, but before we get into that, let's first talk about what swinging and cuckolding are and how they're similar/different. First, swinging often involves two couples swapping partners, which allows both members of both couples to have sex with someone new. Swinging may also involve going to clubs or parties where multiple couples come together for the purpose of temporarily exchanging sex partners. Thus, in swinger relationships, both partners usually have the ability to have sex with others.

By contrast, cuckolding scenarios are quite different because they typically involve one person watching or listening while their partner has sex with someone new. So, in cuckolding, the watcher/listener usually isn’t having sex with anyone else, but their partner is.

Despite these differences, at a fundamental level, both swinging and cuckolding are similar in that they’re both about partner sharing. In addition, it’s worth pointing out that the clear voyeuristic and exhibitionistic elements present in cuckolding scenarios are often present in swinging, too (e.g., when couples swing, it’s not uncommon for partners to have sex with other people while in the same room). Given this overlap, it's easy to see how being interested in one of these practices could potentially lead to interest in the other.

With that said, is there any evidence that declining interest in swinging has coincided with increasing interest in cuckolding? I conducted my own analysis of Google search trends over the last 10 years (January 2007 - December 2016), which you can see in the graph below. The results reveal that searches related to swinging (the blue line) have dramatically decreased, while searches related to cuckolding (the red line) are on the rise.