Sex Addiction: What the Term Means and What Helps
By Mark Ryan, BACP Accredited Psychotherapist and NCPS Accredited Relationship Therapist
I've written separately about porn use specifically, what the term porn addiction gets right and wrong, and what tends to help. This piece covers different, though related, ground, compulsive sexual behaviour that involves other people rather than solo content, affairs, repeated encounters with new partners, paid sex, apps used compulsively rather than occasionally. The underlying question is similar in both pieces, but the relational stakes are often higher here, since this version usually involves another real person, sometimes a betrayal of a specific partner, sometimes real risk to health or safety.
The two are worth reading together where they're both relevant, since the underlying mechanism, a behaviour that's stopped being fully within someone's control, often works the same way whether it plays out through a screen or with other people. What differs is the shape of the impact and, often, what the work needs to include. Porn use tends to raise questions about secrecy and avoidance within an existing relationship. This version more often raises questions about betrayal, disclosure, and sometimes physical risk that the person's partner needs to know about directly.
It's also common for the two to coexist or shift over time, someone whose compulsive use started with pornography moving toward apps and encounters with other people, or the reverse, someone stepping back from real-world encounters and finding the same underlying pattern reasserting itself through content instead. Neither direction is unusual, and neither is a sign that the earlier work failed. The behaviour tends to find whatever outlet is available, which is part of why the work usually needs to address the underlying pattern rather than treating each specific outlet as a separate problem to solve in isolation.
A high sex drive is not an addiction
This needs saying plainly before anything else, because it's one of the most common and damaging confusions in this territory, and it comes up constantly, in this room and in plenty of others. Wanting sex often, having a high libido, or simply having a stronger sex drive than a partner, is not the same thing as sex addiction, and treating it as though it were tends to cause real harm, either to someone who starts pathologising an entirely ordinary part of themselves, or to a partner made to feel like the problem for wanting more than the other person does. The specialists who wrote the World Health Organization's clinical guidelines were explicit about this risk when Compulsive Sexual Behaviour Disorder was added to the ICD-11, taking care that the diagnostic guidelines wouldn't overpathologise ordinary sexual behaviour, and building in the expectation that clinicians would be able to distinguish the disorder from normal variation in sexual desire (Kraus, Krueger, Briken, First, Stein, Kaplan, Voon, Abdo, Grant, Atalla and Reed, 2018). Frequency and intensity of desire were deliberately left out of the core definition. The diagnosis rests on something different.
The marker isn't how often someone wants sex or has sex. It's whether they've lost the ability to control the behaviour despite it causing real, ongoing distress or harm, and whether that pattern has continued for a sustained period rather than being a passing phase. Someone with a high sex drive who isn't distressed by it, isn't harming a relationship, and can still choose not to act on a given urge, doesn't meet this picture, however high the number looks from outside. Someone having far less frequent sex but experiencing it as something they can't stop despite real consequences, might.
This distinction has a real, practical cost when it gets missed. Couples sometimes arrive at therapy with one partner convinced the other has a sex addiction, based almost entirely on how often they want sex compared to how often the couple has it. That comparison, on its own, says very little about addiction and quite a lot about a mismatch in desire between two people, which is common, addressable, and a completely different conversation from the one this piece is about. Getting the framing right early tends to save a couple from spending months arguing about the wrong question.
What to look at instead of frequency
Given that frequency isn't the useful marker, the more accurate picture comes from looking at the behaviour itself and what's happening around it, rather than counting instances. A few patterns tend to show up together, though rarely all at once, in people whose sexual behaviour has become compulsive rather than simply frequent.
One is escalation into territory the person themselves didn't previously want or value. Research comparing people with compulsive sexual behaviour to matched volunteers found a stronger preference for novel sexual stimuli and stronger conditioning to sexual cues in the compulsive group, consistent with patterns seen in other addictive behaviours (Banca, Morris, Mitchell, Harrison, Potenza and Voon, 2016). In practice, this often looks like someone finding themselves drawn toward acts, partners, or risks that sit outside what they'd otherwise choose or feel comfortable with, not because their preferences have changed, but because the behaviour has developed its own momentum, chasing novelty and intensity rather than following what the person wants.
Another is a widening gap between intention and behaviour. Repeated promises to stop or cut back, made sincerely and then broken, are a more useful signal than the underlying frequency ever was. A single lapse doesn't indicate a pattern. A consistent cycle of resolving, breaking the resolution, and feeling worse each time does.
A concrete version of the escalation pattern might look like someone who started by using an app occasionally to meet people, then found the meeting itself became less important than the act of arranging it, then found the specific arrangements shifting toward encounters they'd have found uncomfortable a year earlier, more partners in a shorter window, more risk, less connection to what they'd describe as wanting. None of this necessarily means anything is clinically wrong. It's the trajectory, and the person's own growing discomfort with it, that tends to matter more than any single point on that path.
When it involves another real person
This is where this piece diverges most from the porn-specific one. When compulsive sexual behaviour plays out with other people rather than through solo content, the pattern often surfaces through infidelity specifically. Research examining sexual compulsivity found a clear, graded relationship with the number of outside partners someone had, higher compulsivity scores among people with multiple partners outside the relationship than those with one, and higher again than those with none (Vaillancourt-Morel, Dugal, Poirier Stewart, Godbout, Sabourin, Lussier and Briere, 2016). That study specifically examined survivors of childhood sexual abuse, so it shouldn't be read as a claim that every affair reflects compulsive sexual behaviour, most don't, and infidelity has plenty of other, more common explanations that have nothing to do with addiction. But it does show a real, measurable relationship between sexual compulsivity and a widening pattern of outside partners in at least this population, worth taking seriously rather than assuming compulsion whenever infidelity involves more than one partner.
Where infidelity is part of the picture, the work of rebuilding trust afterward follows much the same territory as any other betrayal, disclosure, safety, and a slow rebuild of confidence in a partner's account of themselves, with the added layer of understanding whether the behaviour was a one-off decision or part of a harder-to-interrupt pattern.
That distinction matters for the couple's own understanding of what happened, separate from whatever the therapeutic term ends up being. An affair that reflects a single, poor decision under specific circumstances calls for a different conversation than a pattern of repeated, escalating outside encounters that the person themselves felt unable to stop despite real attempts. Both are painful. Both deserve to be taken seriously. But conflating them, treating every instance of infidelity as evidence of addiction, or dismissing every instance of a genuine pattern as just one mistake, tends to leave both people working from an inaccurate map of what needs to change.
Wanting sex often, having a high libido, or simply having a stronger sex drive than a partner, is not the same thing as sex addiction.
Why this happens
For many people, compulsive sexual behaviour functions as a way of managing something else entirely, anxiety, loneliness, low mood, a nervous system that's learned to reach for intensity as a way of regulating distress it doesn't have another route for. The relief is real, which is exactly why the pattern is so hard to interrupt through willpower alone. Removing the behaviour without addressing what it was managing tends to leave the underlying state looking for somewhere else to go.
For some people, the function is closer to distraction from a specific difficulty than general emotional regulation, a way of not thinking about a stalled career, a grief that hasn't been processed, a marriage that's gone quiet in other ways. For others, it's connected to earlier experience, including histories of trauma or early relational injury that made intensity feel more available or more trustworthy than closeness. None of this is offered as a single explanation that fits everyone. The common thread is that the behaviour is doing a job, even when it's also causing real harm, and understanding what that job is tends to matter more for lasting change than focusing on the behaviour in isolation.
Shame usually makes this worse rather than better. Most people caught in this pattern already know, in detail, everything that's wrong with what they're doing. Being told again rarely produces change. What tends to help is understanding the function the behaviour is serving, which requires enough safety to look at it honestly rather than defensively.
This is also where a partner's response matters more than most people expect going in. A partner who reacts to disclosure with total condemnation, understandable as that reaction often is, can inadvertently reinforce the exact shame cycle that's been driving the behaviour, making genuine honesty feel even more dangerous going forward. This isn't a reason to expect a betrayed partner to manage their own reaction for someone else's benefit, their hurt is real and deserves its own space. It's a reason both people usually need support, not just the person whose behaviour needs to change.
What helps
Honesty tends to matter more than any specific strategy, and it usually needs to come before a behavioural plan rather than alongside one. Trying to change the behaviour while still hiding its full extent from a partner or from yourself tends to drive it further underground rather than resolve it, which usually means the same pattern resurfaces later in a different form.
Where a relationship is involved, both people benefit from clear, explicit agreements about what's acceptable going forward, worked out together rather than imposed by one partner on the other. Conversations about sex tend to go better with some structure rather than happening only in moments of crisis or discovery, and that structure matters even more here, given how much shame tends to be sitting underneath the conversation for both people already.
Individual work on what the behaviour has been managing, whether that's anxiety, trauma, loneliness, or something else, usually needs to run alongside any couples work rather than instead of it. Trying to do this kind of honest self-examination with a hurt partner in the room is rarely realistic in the early stages, even though the couple's work matters too.
It also helps to have a realistic sense of the timeline. Behavioural change alone, stopping the specific acts, tends to happen faster than the underlying work that makes the change durable rather than temporary. Couples sometimes expect the crisis phase and the recovery phase to move at the same speed, and the mismatch, one person feeling steadier faster than the other trusts that steadiness, is a common and predictable source of friction rather than a sign that something has gone wrong.
How therapy can help
A first conversation isn't about establishing whether you meet a specific diagnostic threshold. What's more useful is understanding the actual pattern, what the behaviour has been doing, what tends to trigger it, and what's been tried already, so the work can start from where you are rather than where either of you thinks you should be, or where you imagine a therapist expects you to be.
Where a partner is involved and willing, this work often moves faster running in parallel, individual sessions alongside couples work, each supporting the other rather than one waiting for the other to finish. Where it's just the person affected, the work stands on its own too and doesn't require a partner's involvement to be worthwhile.
You also don't need to have decided in advance what you want the outcome to be. Some people arrive certain they want to stop the behaviour entirely. Others are less sure, wanting to understand it first before deciding what change looks like for them. Both are reasonable starting points, and neither commits you to a particular destination before the work has properly begun, and neither is treated here as the more serious or more committed way to start.
If you feel like now might be the right time to talk this through with a therapist, I offer a free 30-minute consultation in person (in London) or online. Either partner is welcome to reach out first, and you don't need to have agreed between you on what's happening before you do.
About the Author
Mark Ryan is a BACP Accredited Psychotherapist and NCPS Accredited Relationship Therapist working in person across central London, from rooms in Pimlico, Kensington, and Angel. He works with couples, individuals, and polycules on relationship issues including jealousy, affairs and betrayals, sex problems, and considered separation. His practice is integrative, sex-positive, and affirming of all relationship structures and identities.
References
Kraus, S. W., Krueger, R. B., Briken, P., First, M. B., Stein, D. J., Kaplan, M. S., Voon, V., Abdo, C. H. N., Grant, J. E., Atalla, E., & Reed, G. M. (2018). Compulsive sexual behaviour disorder in the ICD-11. World Psychiatry, 17(1), 109–110. https://doi.org/10.1002/wps.20499
Banca, P., Morris, L. S., Mitchell, S., Harrison, N. A., Potenza, M. N., & Voon, V. (2016). Novelty, conditioning and attentional bias to sexual rewards. Journal of Psychiatric Research, 72, 91–101. https://doi.org/10.1016/j.jpsychires.2015.10.017
Vaillancourt-Morel, M.-P., Dugal, C., Poirier Stewart, R., Godbout, N., Sabourin, S., Lussier, Y., & Briere, J. (2016). Extradyadic sexual involvement and sexual compulsivity in male and female sexual abuse survivors. The Journal of Sex Research, 53(4–5), 614–625. https://doi.org/10.1080/00224499.2015.1061633
