Limerence is an involuntary, all-consuming longing for one particular person: intrusive thoughts about them, vivid daydreams of being together, and a mood that rises and crashes with every sign of whether they feel the same. The psychologist Dorothy Tennov coined the word in the 1970s to describe a kind of “being in love” that many people recognised in themselves and nobody had named. Limerence is not a diagnosis. But it is no longer only a word: in the last year it has gained its first published questionnaire and its largest study to date, of 1,647 people.
If you are reading this because you cannot stop thinking about someone, rereading their messages and building whole futures out of a glance, you are describing something researchers now take seriously. What follows is what limerence is, how it differs from love, what the new research shows, and what tends to help.
What limerence is, and where the word comes from
Tennov developed the idea from interviews about romantic love and set it out in her 1979 book Love and Limerence: The Experience of Being in Love. As a later clinical paper summarises her work, she noticed that many interviewees described the same thing: an involuntary, overwhelming longing for another person’s attention and approval, usually for someone unable or unwilling to return it.
The research definition today is close to hers. A 2026 study led by researchers at the Universities of Sheffield and Sussex defines limerence as “an intense, chronic, and involuntary state of unreciprocated obsessive relational longing for a specific individual”, and adds that it exists on a continuum. The person at the centre of it is called the limerent object, often shortened to LO.
Three things set limerence apart from simply being keen on someone:
- It is involuntary. People describe it as something that happens to them, often against their own judgment.
- It feeds on uncertainty. In Tennov’s account, not knowing whether the other person feels the same is what drives it. Obstacles and doubt intensify it, rather than cooling it.
- It takes over. The thoughts are frequent, intrusive and hard to set aside, and they can crowd out work, sleep and other relationships.
Limerence vs love
This is usually the real question: is this love, or is it something else? Nobody has run a study comparing the two head to head, so what follows are the distinctions researchers draw when describing limerence, not a test you can score.
| Limerence, as described in research | A mutual, loving relationship | |
|---|---|---|
| Reciprocity | Uncertain or absent; the not-knowing fuels it | Feelings are known and returned |
| Who it is about | Often an idealised version of the person | The real person, flaws included |
| Your mood | Soars and crashes with their signals | Steadier; not hostage to each message |
| Your life | Can crowd out work, sleep and other people | Sits alongside the rest of your life |
The idealisation point comes up again and again. In an in-depth interview study of six people experiencing limerence, researchers found that both the actual person and an idealised version of them were involved, and they linked this to attachment anxiety. The longing often attaches to someone the limerent person barely knows well enough to love in the everyday sense.
None of this makes limerence fake. The feeling is real and often intense. The useful question is not “is this real?” but “is this about the person, or about the longing?”
Limerence vs a crush, or infatuation. There is no research distinction between these words. Most people use “crush” and “infatuation” for something lighter and briefer, which usually passes on its own. Limerence, in the research sense, is the chronic, involuntary end of the same continuum, where the thoughts are intrusive and the longing starts to cost you something.
What limerence feels like from the inside
The clearest window on this is the 2026 study’s second part, which is also the first to use experience sampling. Fifty-one people with limerence that was disrupting their lives reported their thoughts and feelings repeatedly over seven days, in real time, rather than remembering them afterwards. The results:
- Thoughts about the limerent object took up around half of their waking thought.
- Those thoughts were intrusive and immersive, and strongly linked to negative mood.
- The most common pattern was intrusive, distracting fantasy, especially when people were feeling sad or lonely.
That half-of-waking-thought figure comes from 51 people whose limerence was impairing enough for them to take part in a study of it. It describes the severe end of the experience, not everyone with a crush.
Clinical descriptions add the behaviour that goes with the thoughts: rereading messages, looking at photos, checking their social media, replaying past conversations for clues about how they feel, and finding ways to bring them up in conversation. In the one published treatment case, the person tracked these “rituals” for two weeks and counted 225 of them, adding up to more than eight hours, on top of an estimated 30 to 90 minutes a day of rumination.
What the research actually knows now
For most of the nearly five decades since Tennov’s book, limerence lived in self-help books, forums and a handful of small studies. Two recent papers change that.
A questionnaire (2025). Psychologists from four UK and Italian universities published the Limerence Questionnaire, or LQ-11, stating that before it there were no published measures of limerence. They developed and tested it in two groups of people who had experienced or were experiencing limerence (269 and 401 people). It measures two things: an intense need for attachment, and neglect of yourself and others. It is one development paper with self-selected samples, and it is a research tool rather than a self-diagnosis quiz. But it means limerence can now be measured in a consistent way.
The largest study so far (2026). Chloe Evans, Giulia Poerio and colleagues surveyed 1,647 people. They report that limerence typically starts in adolescence (the study summary gives 18), recurs across adulthood at around five episodes, and that each episode is a prolonged fixation of around two years. People experiencing limerence reported more adverse childhood experiences, more insecure attachment and more obsessive-compulsive thinking traits. And 42% met the threshold for anxiety, depression, dissociation and maladaptive daydreaming all at the same time.
Here is what those findings can and cannot tell you:
| Study | What it found | What it can’t tell you |
|---|---|---|
| LQ-11, 2025 | A two-part measure of limerence that holds up statistically | How common limerence is, or a cut-off that means “you have it” |
| Evans et al., 2026, study 1 | Typical onset, course and what limerence travels with, in 1,647 people | What causes it: the data are a snapshot, not a cause-and-effect test |
| Evans et al., 2026, study 2 | Half of waking thought, fantasy peaking with sadness and loneliness | Whether the same holds for milder limerence |
| Wyant, 2021 | One person’s treatment with CBT techniques | Whether any treatment works in general |
Two further cautions. The 42% figure describes people in this study who identified with limerence, not the general population. And we were able to read only the published summary of the 2026 study, not its full methods, so this article reports its headline figures as the authors give them and goes no further.
The same authors conclude that limerence needs formal diagnostic criteria and that psychological treatments for it need to be evaluated, which is a plain way of saying that none yet have been.
Why limerence happens
There is no established cause. The Evans team interpret their findings as pointing to trauma and relational insecurity underneath, kept going by obsessive-compulsive traits and maladaptive daydreaming. That is their reading of cross-sectional data, meaning a single snapshot of many people, which can show what goes together but not what causes what. With that caveat, here are the threads:
Attachment insecurity. Limerent people in the 2026 study reported more insecure attachment, and the six-person interview study linked the idealised version of the limerent object to attachment anxiety. If the fear of losing people, and a strong need for reassurance, feels familiar more broadly, our guide to anxious attachment style covers that pattern.
Obsessive-compulsive traits. The loop of intrusive thought, checking and brief relief looks a lot like obsessive-compulsive patterns, and the treatment case borrowed directly from OCD therapy. It is a close cousin of relationship OCD, where the intrusive doubts are about a partner you are already with. Limerence is about someone you are not with, or not secure with. And if the fixation is on a partner’s past rather than on someone out of reach, that is retroactive jealousy, which runs on a similar loop.
Daydreaming, sadness and loneliness. Maladaptive daydreaming was part of the 2026 study’s comorbidity picture, and fantasy was most intrusive when people felt sad or lonely. For many people, the fantasy works as a way to feel better that also keeps the longing alive.
Earlier hard experiences. Adverse childhood experiences were more common among limerent participants. That is a correlation, not a verdict: plenty of people with limerence had no such experiences, and plenty with them never develop limerence.
One more observation from the case literature: limerence is not simply sexual attraction. In the published treatment case, the author’s limerent objects were older women in mentoring roles, to whom she felt no sexual attraction. Some people describe limerence as intensely emotional and not sexual at all.
How long does limerence last?
In the 2026 study of 1,647 people, a typical episode lasted around two years, and most people had several over their lifetime. That sits close to Tennov’s much earlier observation, as summarised by Wyant, that an episode might last anywhere from a few weeks to decades, with an average of 18 months to three years.
Two things follow. Limerence usually does fade. And because it tends to recur, learning what feeds your own episodes is worth more than waiting this one out.
How to get over limerence
Start with the honest part: no treatment for limerence has been tested. The entire treatment literature under that name is a single case study, in which the person treated was the author herself. It is a useful illustration of an approach, not evidence that it works. So be wary of anyone promising a cure. With that said, these steps follow most directly from what the research describes:
- Call it what it is. At follow-up in the case study, the author still thought about the person often, but could now recognise those thoughts and feelings as limerence rather than as information about the other person. That shift, from “this means something” to “this is the longing again”, is the foundation for everything else.
- Count the rituals. Rereading messages, checking their profile, looking at photos, walking past their home or office. Tracking them for a week or two, as in the case study, makes the loop visible, and it is usually bigger than people expect.
- Stop feeding it, one ritual at a time. Each check brings brief relief and a stronger pull next time. In the case study, resisting the rituals was the core of treatment. At a nine-month follow-up, the same two-week count had fallen from 225 rituals to 10. Expect it to feel worse before it feels better.
- Reduce contact where you can. In their 2013 book on limerence, Lynn Willmott and Evelyn Bentley advise cutting contact with the limerent object entirely, much as someone might stop using a substance (as reported in the case study). That is not always possible: in the case study the person was a colleague, so the focus stayed on the rituals instead. Muting or unfollowing is often a realistic middle step.
- Watch the sad and lonely moments. Fantasy peaks when you are low or alone. Plan something else for those moments in advance: a person to call, a walk, something that absorbs you. Rebuilding a life with other sources of connection and satisfaction was part of the treatment, not an afterthought.
- Test the idealised picture. Write down what you actually know about this person, and what you have filled in. Much of the pull belongs to the version your mind has built.
The six-person interview study found something worth holding onto. Participants described a journey that ran through rumination, anxiety and a sense of falling apart, and then moved toward greater authenticity: a clearer sense of who they were and what they wanted. Six people is a small sample, but it is a reminder that limerence can end somewhere better than where it started.
If you want a place to think out loud when the pull is strongest, especially at the lonely hours when fantasy takes over, aidx.ai, an AI coaching and therapy service, can help you notice the loop, name what is feeding it and practise a different response. If limerence is taking over your life, or sits alongside low mood or anxiety, a human therapist is the right next step.
When limerence becomes a problem worth getting help for
Limerence exists on a continuum, and a lot of it passes without harm. It is worth talking to a doctor, therapist or counsellor if:
- the thoughts take up hours of your day, or you cannot stop checking even when you want to;
- your work, sleep or relationships are suffering;
- you feel low, anxious or hopeless much of the time, since in the 2026 study limerence often came alongside anxiety and depression;
- it keeps recurring, and you would like to understand why.
A therapist experienced with obsessive thinking and anxiety is a good fit, because the closest-matched approaches are cognitive behavioural therapy techniques used for OCD. Few clinicians know the word limerence, so it can help to describe what happens rather than lead with the label.
One line is worth stating plainly, because limerence is about someone else. If your feelings are pushing you toward contacting someone who has asked you not to, turning up where they will be, or monitoring them, stop and get support now. A 2025 scoping review argued that the fixation involved in limerence can, in some cases, become a stepping stone toward stalking. Its authors are explicit that the aim is not to label people with limerence as deviant. It is still a reason to take that line seriously. Their boundaries matter as much as your feelings.
And if you are having thoughts of suicide or self-harm, contact emergency services or a crisis line straight away.
Common questions
Is limerence real? Is it bad?
It is real in the sense that matters: many people experience it, it can be measured, and it can cause real distress. It is not a diagnosis in any clinical manual. It is not “bad” in itself either, since it sits on a continuum, and milder forms pass without harm. It becomes a problem when it takes over your time, mood or relationships.
Can limerence turn into love?
No research has followed limerence into long-term relationships, so nobody knows how often it does. What the descriptive accounts suggest is that limerence feeds on uncertainty and idealisation. If the feelings are returned and you get to know the real person, what remains may be a steadier kind of love, or it may fade. The honest test is whether you still want the person once the uncertainty is gone.
How do I know if it is love or limerence?
Ask yourself whether it is mutual and known, whether you love the actual person or an imagined one, and whether your mood depends on their every signal. The comparison table above sets out those differences. There is no validated test that settles it.
What causes limerence? What type of person is prone to it?
No cause has been established. In the largest study, people with limerence reported more adverse childhood experiences, more insecure attachment and more obsessive-compulsive thinking traits than others. Those are associations in a single snapshot study, not causes, and they do not describe everyone who experiences limerence.
What is the root cause of limerence?
There isn’t one established root cause. The researchers behind the 2026 study interpret it as linked to earlier trauma and relational insecurity, maintained by obsessive traits and daydreaming, but that is an interpretation of correlational data. For you personally, the more useful question is what feeds your episodes: loneliness, uncertainty, particular kinds of people, or particular moments.
What are the stages of limerence?
Popular articles list three or four stages, often attributed to Tennov. No study has tested whether limerence actually moves through a fixed sequence of stages. The research describes episodes that begin, persist for around two years on average, and fade, often to recur with someone new.
What are the signs of limerence? How do I know if I have it?
Common features include intrusive thoughts about one person, vivid fantasies of being together, a mood that depends on their signals, rereading messages or checking their profiles, replaying interactions for hidden meaning, and neglecting other parts of your life. Recognising several of these in yourself is a reason to take it seriously, not a diagnosis.
Is there a limerence test or quiz?
The research measure is the LQ-11, published in 2025. It is designed for research and clinical settings and does not come with a self-scoring cut-off. Online limerence quizzes are not validated measures. The questionnaire in the 2021 case study was created for that one case and is not validated either.
Is limerence linked to ADHD?
You will see this connection often online. None of the research reviewed for this article establishes a link between limerence and ADHD. If rejection hits you unusually hard, rejection sensitive dysphoria is a related idea worth reading about, but that is a separate thing.
Is limerence common in autistic people?
This is a popular association too. None of the research reviewed here establishes a link between limerence and autism. A 2025 scoping review discussed autism among other conditions when considering how limerence has been conceptualised, but that is not evidence of a connection. If you are autistic and recognise limerence in yourself, the approaches above still apply.
Is limerence linked to BPD?
No research has linked the two directly. Intense longing and fear of abandonment appear in many situations, including borderline personality disorder, but limerence on its own is not a sign of BPD. A clinician can assess that properly if you are concerned.
What about limerence during a relationship, or an affair?
Limerence for someone else while you are in a relationship is common enough to have its own search terms, and it can feel overwhelming. It has not been studied specifically. Feelings are not chosen, but actions are, and the same steps apply: recognise the loop, stop feeding it, reduce contact where you can, and look honestly at what the longing is pointing to in your own life. If it is putting your relationship or someone else at risk, a therapist can help you think it through.
Can limerence be mutual?
The research definition describes limerence as unreciprocated. When two people are intensely preoccupied with each other early in a relationship, that is usually described as ordinary mutual infatuation. In Tennov’s account, limerence depends on uncertainty, so clear, returned feelings tend to change its character.
What is platonic limerence?
Limerence without sexual attraction. It is well described in the case literature: in the one published treatment case, the limerent objects were mentors to whom the author felt no sexual attraction. It works the same way, with intrusive thoughts, idealisation and a need for the person’s attention, just without the romantic or sexual element.
How can I tell if someone is in limerence with me?
You can’t diagnose someone else, and it is best not to try. If someone’s attention feels intense, one-sided or hard to set limits with, the useful focus is your own boundaries: be clear and kind about what you do and don’t want, and get support if their behaviour makes you feel unsafe.
Is there a treatment or cure for limerence? Does CBT work?
No treatment has been tested. The one published case used cognitive behavioural techniques from OCD treatment, namely exposure and response prevention, challenging distorted thoughts and rebuilding activities, and the person’s rituals fell sharply. But it is one person, who was also the author, with self-reported results. The researchers behind the largest study call for treatments to be evaluated. A therapist experienced with obsessive thinking can adapt established approaches, and that is a reasonable place to start.
Last reviewed: September 2026
References
- Bradbury, P., Short, E., & Bleakley, P. (2025). Limerence, hidden obsession, fixation, and rumination: A scoping review of human behaviour. Journal of Police and Criminal Psychology, 40, 417–426.
- Evans, C., Panton, S. O., Strawson, W. H., Floyd, E., Kellett, S., & Poerio, G. L. (2026). Love, longing and obsession: Features, correlates, comorbidities, and real-time cognitive-affective dynamics of limerence. Acta Psychologica, 267, 107043.
- Marshall, L., Waldeck, D., Pancani, L., Churchill, S., & Tyndall, I. (2025). Development and validation of the Limerence Questionnaire (LQ-11). Psychological Reports. Online ahead of print.
- Tennov, D. (1979). Love and Limerence: The Experience of Being in Love. New York: Stein and Day.
- Willmott, L., & Bentley, E. (2013). Love and Limerence: Harness the Limbic Brain. West Sussex: Lathbury House.
- Willmott, L., & Bentley, E. (2015). Exploring the lived-experience of limerence: A journey toward authenticity. The Qualitative Report, 20(1), 20–38.
- Wyant, B. E. (2021). Treatment of limerence using a cognitive behavioral approach: A case study. Journal of Patient Experience, 8.
This article is general information about limerence and related emotional difficulties and is not medical advice or a substitute for care from a qualified professional. If intrusive thoughts or longing for someone are affecting your life, speak to a doctor or mental health professional. If you are in crisis or having thoughts of suicide or self-harm, contact emergency services or a crisis line immediately: call or text 988 in the US, call Samaritans on 116 123 in the UK and Ireland, or use your local emergency number.
