Erotic fantasies occupy a curious position in contemporary discussions of sexuality. On the one hand, psychological research has established them as universal, normal, and generally benign — even beneficial. On the other hand, cultural and moral frameworks often treat them with suspicion: as evidence of dissatisfaction, of hidden desires that threaten the relationship, of a mind that should be elsewhere.
Mindful sexuality offers a different frame. Rather than treating fantasy as something to be suppressed (in more traditional moralising frameworks) or as a script to be enacted (in more performance-oriented frameworks), a mindful approach asks: what is this imagination doing, what does it reveal, and how can it be integrated with presence rather than opposed to it?
This is a guide to that integration: the psychology and neuroscience of erotic fantasy, the research on sharing in couples, and the specific question of how imagination relates to slow sex practice.
What are erotic fantasies? The psychology
An erotic fantasy is a mental image, scenario, or narrative that generates sexual arousal. They range from brief, diffuse sensory impressions to elaborate, detailed scenarios; from scenarios involving the current partner to scenarios involving strangers, multiple partners, or entirely imaginary figures.
Justin Lehmiller (Indiana University), whose 2018 book Tell Me What You Want represents the largest systematic study of sexual fantasy content published to date, surveyed 4,175 Americans across demographics and orientations. His key finding: 97% of respondents reported fantasising regularly. Among the most common fantasy themes: multipartner sex (polyamory, threesomes), novelty and adventure, romance and passion, taboo elements, power dynamics. Fantasy content cuts across gender, orientation, and relationship status in ways that confound most stereotypes.
From a psychological perspective, erotic fantasy serves several distinct functions:
- Desire generation: fantasy activates the dopaminergic anticipation circuit even in the absence of external stimulation — it is a way of generating desire independently of circumstance
- Rehearsal and exploration: fantasies allow exploration of scenarios that would not be chosen, or not be possible, in reality — in a space of zero consequence
- Emotional regulation: erotic imagination can function as a self-soothing mechanism, a way of accessing pleasure states during stress
- Compensation: some fantasies compensate for aspects of real sexuality that feel absent — tenderness, power, novelty, abandon
Understanding these functions helps disentangle what a fantasy means from what it does. A fantasy about a scenario one would never choose in reality is not necessarily an unfulfilled desire for that scenario — it may be performing an entirely different psychological function.
Why erotic fantasies are healthy
The clinical and research consensus is clear: erotic fantasy is not a symptom of dysfunction. It is not evidence of dissatisfaction with the current partner, not a precursor to infidelity, and not inherently incompatible with deep relational commitment.
Eileen M. Venturini’s research on fantasy and relationship outcomes found no significant association between frequency of fantasising about others and actual infidelity risk. The quality of the attachment relationship is a far better predictor of relational fidelity than fantasy content.
Moreover, research consistently links the ability to fantasise richly with higher sexual satisfaction — not lower. Erotic imagination appears to be a resource, not a liability. The people who struggle most in this domain are not those who fantasise “too much” but those who experience intrusive guilt or shame about normal fantasy content — a cognitive pattern that consistently predicts sexual dissatisfaction and avoidance.
This is not to say all fantasy content is clinically equivalent. Intrusive, unwanted, ego-dystonic sexual thoughts — experienced as distressing and inconsistent with one’s values — are a different phenomenon, often associated with OCD or other anxiety-spectrum presentations, and benefit from specialist support.
Types of erotic fantasies: what the research shows
Lehmiller’s taxonomy of fantasy themes provides a useful framework:
Multipartner scenarios are the single most commonly reported fantasy category — reported by more than 89% of his sample. This finding consistently surprises people, because the social script around committed relationships does not accommodate it. Its prevalence appears to reflect novelty-seeking in the dopaminergic system and its brain circuits rather than actual desire for a polyamorous structure.
Power and control dynamics — scenarios involving dominance, submission, helplessness, or control — are extremely common across all genders. Research suggests these fantasies function, paradoxically, as experiences of safety: the fantasy environment provides complete control over the scenario, even when the imagined content involves relinquishing control. For people whose relationship with safety and intimacy has been shaped by trauma, body-oriented therapy for healing through the body can help gradually restore the conditions in which such imaginative exploration feels genuinely free.
Romantic and intimacy themes — scenarios characterised by tenderness, sustained attention, emotional depth — are among the most common for women and more common among men than is often assumed. The stereotype that men fantasise purely about physical scenarios and women about romantic ones is not supported by the data.
Taboo and forbidden themes — scenarios that feel transgressive or prohibited — are common across all demographics. Jack Morin (The Erotic Mind, 1995) argued that a degree of “forbidden charge” is structurally constitutive of erotic arousal for most people — desire is reliably heightened by what feels slightly beyond the permissible. This is neurobiologically unsurprising: novelty and mild transgression activate the dopaminergic system.
These psychological patterns shape how couples engage with couple intimacy rituals and the dynamic between imagination and lived experience.
Sharing fantasies with a partner: how to do it well
Lehmiller found that among people who had shared a sexual fantasy with a partner, outcomes were broadly positive: participants reported increased sexual satisfaction and greater relational intimacy. But the quality of the sharing context mattered enormously.
Positive sharing contexts shared several features:
- The conversation was initiated voluntarily, not in response to pressure
- Both partners felt safe to react with curiosity rather than judgment
- The fantasy was shared as an expression of inner life, not as a request or demand
- There was no implicit assumption that sharing = obligation to enact
Conversations to avoid typically involved:
- Sharing a fantasy as an implicit criticism of the current sexual relationship
- Pressure (overt or subtle) on the receiving partner to respond enthusiastically
- Sharing in a context of relational tension or insecurity where the fantasy could be weaponised
Practical starting points: begin with what you find arousing in general rather than a specific fantasy — “I find the idea of… compelling” is a lower-stakes opener than “I have a fantasy about…”. Listen more than you share at first. The goal of these conversations is mutual understanding, not inventory exchange.
Mindfulness and imagination: are they compatible?
A common misunderstanding about slow sex and mindful sexuality is that they require an empty mind — that any mental content during intimacy represents failure of presence. This is not the case.
Mindfulness, properly understood, is not the suppression of experience but the observation of it without reactive identification. This includes the contents of the inner life during intimacy: images, sensations, thoughts, feelings — including erotic imagination.
What changes in a mindful approach is not whether imagination arises, but the relationship to it. In performance-oriented sexuality, fantasy often serves as an escape from the moment — the mind goes elsewhere because the present is somehow inadequate. In mindful slow sex, imagination can be integrated differently: held lightly, allowed to inform the quality of presence without becoming an escape from it.
This is sometimes called conscious fantasy in slow sex and neo-tantric traditions: a practice of gently allowing inner imagery to arise and pass while remaining fundamentally anchored in the body, the breath, and the contact with the partner. It is closer to the meditative state of allowing thoughts to arise and pass without grasping them than it is to the immersive escapism of fantasy as avoidance.
Practical exercises: slow sex and the inner world
Exercise 1 — The body anchor: during intimacy, when you notice the mind beginning to wander into narrative or imagery, bring attention to one specific point of physical contact — the weight of a hand, the warmth of skin, the rhythm of breath. Hold that anchor for three breaths, then let the mind be where it is. This is not suppression — it is oscillation between inner and outer, which is itself a form of presence.
Practitioners of orgasmic meditation often report that regular practice deepens precisely this capacity to engage the erotic imagination without losing present-moment awareness.
Exercise 2 — Consensual inner sharing: after an intimate encounter, share one image or feeling from your inner world — not necessarily a fantasy, but any quality of imagination that arose. This practice builds a shared vocabulary for the inner life without requiring explicit fantasy disclosure.
Exercise 3 — The slow-motion image: alone, practise deliberately slowing an erotic image in your mind — staying with a single moment rather than running the full scenario. This practice builds attentional capacity in the imaginative domain, making the inner world more available as a resource rather than an automatic rapid cycle.
Lehmiller’s research is available through his website at justinlehmiller.com for those wishing to explore the data directly; his book Tell Me What You Want (Da Capo Press, 2018) remains the most comprehensive published account of what people actually fantasise about and why.
Erotic fantasy is not a threat to mindful intimacy. It is one of its natural dimensions — the inner life that runs alongside, and sometimes enriches, physical presence. The art is not suppression but integration: holding the imagination lightly enough that it becomes a resource rather than an escape.