RN
The headline claim is the weakest part. Nobody tracks how many couples do this, nobody tracked it twenty years ago either, and without a baseline "more popular than ever" is a sentence with the shape of a fact and none of the content. Every article making it is either citing search volume — which measures curiosity, not practice — or citing nothing.
What changed is visibility, and specifically the visibility of the word. Around 2016 "cuck" was picked up as a political insult in the United States and detached almost entirely from the sexual practice it came from. That gave the term enormous circulation among people who had no interest in the thing itself, and the resulting noise is what most "it's trending" pieces are actually detecting.
The research underneath is more useful than the trend story, so this article is about that instead.
Definitions, because the word is doing several jobs
In current usage, cuckolding describes a consensual arrangement in which one partner's sexual involvement with someone else is a source of arousal for the other. The defining feature is that everyone agreed beforehand. That distinguishes it from infidelity, which is the same physical act without the agreement, and which is a different thing entirely.
Within that it splits further. Some arrangements are purely fantasy, discussed and never acted on. Some are voyeuristic and the partner is present. Some are not — the interest is in the knowledge rather than the sight. Some involve humiliation dynamics and some are the opposite, closer to what people describe as compersion, pleasure taken in a partner's pleasure. "Stag and vixen" is the label often used for the version without the humiliation element, and the distinction matters because people negotiating this frequently discover they have imported assumptions from pornography that their partner does not share.
The original word means something narrower and older — a man whose wife has a child by another man — which is why it carries the historical baggage of shame and public ridicule that the modern usage often deliberately inverts.
What the survey work shows
The most-cited numbers come from Lehmiller's large survey of American adults for Tell Me What You Want, which found that a majority of the men surveyed and roughly a third of the women reported having fantasised about a partner having sex with someone else.
Take that for what it is. It measures fantasy, in a self-selected sample, in one country. It says nothing about how many people act on it, and the gap between fantasy and practice is enormous for every sexual interest that has been measured. What it does establish is that this is a common thing to think about — common enough that treating it as evidence of a disordered mind is not supportable.
The related work by Ley, Savage and Lehmiller on gay men's cuckolding fantasies found broadly similar dynamics with different framing, unsurprisingly, since the monogamy norm the fantasy transgresses is not equally strong across communities. Where the transgression is smaller, the fantasy tends to be organised around voyeurism and group sex rather than around taboo.
The finding worth acting on
The genuinely useful result is not about prevalence. It is that acting on the fantasy has predictably different outcomes for different people, and the predictors are visible in advance.
Reported positive outcomes cluster among couples with strong existing communication, secure attachment, low relationship anxiety, and a habit of planning things in detail. Negative outcomes cluster among couples with high abandonment anxiety, poor communication, existing insecurity, and a tendency to improvise.
That inverts the usual framing. The question is not "is this healthy" — it is not inherently either — but "are we the sort of couple this goes well for." If a relationship is already strained, if one partner is agreeing to avoid losing the other, or if the plan is to see what happens, the research says this is not the moment. That is not a moral position; it is a description of who reports regretting it.
The parts that actually go wrong
Jealousy is not the main hazard, and the framing of jealousy as an obstacle to overcome is where a lot of this advice goes astray. Jealousy is information. For some people it is the erotic component itself; for others it is an accurate signal that something is not working. Treating it as a defect to be pushed through is how people end up somewhere they did not agree to be.
The commoner failure modes are unglamorous:
- Asymmetric enthusiasm. One partner wants it, the other consents to keep the peace. Agreement obtained this way tends not to survive contact with the actual event.
- The fantasy-to-reality gap. What is arousing to imagine can be flatly upsetting to witness, and there is no way to know in advance which it will be for you.
- The third person as a prop. Whoever else is involved is a person with their own expectations, not a device. Arrangements that treat them as scenery generate the messiest outcomes.
- Retroactive renegotiation. Rules invented mid-event are not rules. Everything specific gets decided beforehand, including how it stops.
- Sexual health. More partners means more exposure. Barriers, testing schedules and disclosure between everyone involved are logistics, not romance, and they get sorted before rather than after.
If it is going to be discussed
Raise it away from bed, with no expectation of an answer that evening. Frame it as something you have thought about, not something you are proposing to schedule. Give the other person room to say no and mean it — an interest that only one partner holds is an extremely ordinary situation and does not have to become a referendum on the relationship.
If it goes further, the useful preparation is boring: what is in scope, what is not, who else is involved and what they have been told, where it happens, what the stop word is, and — the one people skip — what the plan is for the following day, when the aftermath arrives.
A therapist who works with kink and non-monogamy is worth the money if either of you is anxious about it. General couples counsellors vary widely in how they handle this, and one who treats the interest itself as the presenting problem will not be useful.
What the porn version is not
The cuckold genre is a genre. It is built on humiliation, exaggerated stereotype and a narrow set of scripts because those things film well, and it bears roughly the relationship to real arrangements that any other porn category bears to the thing it depicts.
Watching it is not a plan. A great many people who find the fantasy arousing on screen have no interest in it happening, and that is a complete and unremarkable position. The mistake the trend pieces encourage — treating an aroused response to a video as a discovery about what your relationship should become — is the one worth avoiding.