One of you lies awake; the other turns away and sleeps. Nobody has cheated, nobody has even raised their voice, and yet something in the room has gone heavy. This is the single most common complaint couples bring into therapy and the one they speak about least outside it: sexual desire discrepancy — a persistent gap between how much two partners want sex.
This article is presented by Dr. Saeed Behckam, clinical psychologist and sex therapist practicing in Iran (Tehran) and Canada (Toronto, Richmond Hill & Vancouver), for the readers of Behckam.com.
What is desire discrepancy, and how common is it?
First, a correction that matters clinically: desire discrepancy is not a disorder. A disorder lives inside one person; a discrepancy lives in the space between two people. There is no universal number for how much desire is “normal,” which means neither partner is broken, frigid, or excessive. What exists is a gap.
On prevalence, a two-year study published in 2026 followed 217 couples and identified four distinct desire trajectories. The largest class was precisely the discrepant one: 37 percent, roughly 80 of the 217 couples. The others were moderate desire (27%), high desire (26%), and steep decline with low desire (10%). In plain terms, mismatched desire was not the exception — it was the most common pattern observed.
That figure needs a caveat. All 217 couples were undergoing medically assisted reproduction, a period of unusual medical and emotional strain. The sample was predominantly white, highly educated, and had no control group. So read 37% as prevalence in a population under pressure, not as a global rate.
Why don’t two people want sex at the same time?
The assumption that does the most damage is this one: “If they really wanted me, they would want me when I want them.” Desire is not a fixed trait like height. It is a context-dependent response. Exhaustion, body shame, financial anxiety, a child in a small apartment, migration and the loss of a support network — all of these change the context, and desire moves with it.
Clinically, the distinction between spontaneous and responsive desire is widely used: in the first pattern desire arrives before contact; in the second it wakes up during and in response to closeness. When one partner demands that the other want it “in advance,” they are effectively asking them to run on a different operating system. [Further verification needed: this is a widely applied clinical framework, but direct empirical support for its discriminant validity remains limited and debated.]
More subtly, the direction of the gap matters, not only its size. A study of 255 new-parent couples found that larger discrepancies predicted lower sexual satisfaction for both partners — but when the mother was the higher-desire partner, both people reported less satisfaction than when the father was. That finding is cultural rather than biological: when the script in which men pursue and women consent gets inverted, both partners feel exposed. The study’s limits are clear too — it was cross-sectional and restricted to new parents.
What does the moment of saying “no” actually do?
Most couples assume the problem is the number of refusals. The evidence points somewhere else: it is mostly the shape of the refusal.
A 2025 study of 51 men with distressing low desire separated four rejection styles: deflecting (changing the subject, feigning sleep, pretending not to notice), hostile (a sharp reply, contempt, physical pushing away), reassuring (declining while expressing affection and making clear the partner is not the problem), and assertive (a clear, respectful no without excess explanation).
Deflecting rejection was associated with lower sexual satisfaction, lower relationship satisfaction, and a weaker sense of partner responsiveness in both partners — and greater sexual distress in the man himself. Hostile rejection also lowered satisfaction on both sides. Reassuring and assertive rejection, by contrast, tracked with higher satisfaction.
In other words, “no” does not damage a relationship; ambiguity does. When the other person cannot tell whether they were refused, the mind fills the vacuum with the worst available story: “I am no longer wanted,” “there is someone else.” One plain sentence — “not tonight, it isn’t about you, and I’d like to tomorrow” — closes that vacuum.
The limitations deserve stating plainly: the sample was 51 men only, and the authors explicitly note that results were not corrected for multiple testing in order to preserve exploratory findings. These results are directional, not definitive. They do carry one culturally important point, however: low sexual desire is not a women’s issue.
Which strategies actually work?
A mixed-methods study of 229 people in long-term relationships asked what people actually do in the moment of a desire gap. Thematic analysis produced 17 strategies in five groups: disengagement, communication, solo activity, another activity with the partner, and having sex anyway.
The headline finding was clean: partnered strategies — talking about it, or doing something else together — were associated with higher sexual and relationship satisfaction than individual strategies such as withdrawing or masturbating in silence. Second, the more a person rated their strategy as helpful, the higher their satisfaction; agreement on the solution mattered as much as the solution itself.
“Having sex anyway” deserves precision rather than simplification. Consenting out of a wish to feel close to your partner is not the same as consenting out of fear or obligation; the second erodes desire over months and breeds resentment. The boundary is freely given consent, not a frequency count.
Limitation: the study was cross-sectional and correlational, and surveyed individuals rather than couples. We cannot say communication caused satisfaction; more satisfied couples may simply find it easier to talk.
Why does desire fade in the safest relationship of all?
Here we reach a question statistics alone cannot answer: why do so many couples report that as their emotional intimacy deepened, their erotic charge thinned out?
Freud framed this in 1912 by separating two currents: the affectionate current and the sensual current. In some people, he argued, these two never fully converge on one person, producing the familiar contradiction — where they love, they do not desire; and where they desire, they cannot love.
The practical modern reading is simple. As a partner migrates into the position of “family” — dependable, familiar, predictable, the person you split logistics with — the very familiarity that creates safety can erase the distance desire needs. Desire requires some tension: the other person must not be entirely available and entirely known. This explains why the instinctive remedy of “spending more time together” sometimes backfires, and why restoring a measure of separateness — an independent interest, a short solo trip, seeing your partner in a role outside the home — often does more for desire than any technique.
[Further verification needed: Freud’s 1912 formulation is a clinical-theoretical framework without direct modern empirical testing; its value is explanatory rather than predictive.]
Also read: نسخهٔ فارسی این مقاله · Porn and Desire: Why Does It Affect Couples So Unequally? · Rebuilding Intimacy After Conflict
Frequently Asked Questions — Behckam.com
Does a desire gap mean love is over?
No. Mismatched desire is one of the most common patterns in long-term relationships and coexists with high relationship satisfaction in many couples. What lowers satisfaction is not the gap itself but the silence and ambiguity that accumulate around it.
If my partner always says no, is it my fault?
Not necessarily. Desire is context-dependent, and fatigue, financial strain, migration, pregnancy and body shame all shift it. But the shape of the “no” matters: a vague, deflecting refusal is what plants the story “I am no longer wanted” in the other person’s mind.
Is having sex “for your partner” a good idea?
It depends on the motive. Consenting out of a wish to feel close is a positive experience for many couples and can awaken responsive desire. Consenting out of fear, pressure or obligation wears desire down over time and breeds resentment. The boundary is freely given consent.
When should a couple see a specialist?
When the subject has become a repeating, unresolvable argument; when one partner avoids physical closeness altogether; when individual distress has become significant; or when the change in desire was sudden and unexplained by context. In that last case a medical evaluation is also warranted.
So what actually changes?
The most hopeful finding across this literature is that none of the decisive factors are fixed. The gap cannot and should not be reduced to zero — no real relationship has that. What builds satisfaction is not the size of the gap but the quality of the bridge you put across it: kind directness instead of ambiguity, a two-person strategy instead of silent withdrawal, and the acceptance that two bodies were never going to run on one clock.
Couples who build that bridge are, in the same datasets, the ones reporting higher satisfaction — and that is a learnable skill, not a talent you either have or lack.
Looking for professional support with your relationship or mental health?
For evidence-based, confidential guidance on your sexual, emotional and mental wellbeing, you can book a private consultation with Dr. Saeed Behckam, Iranian clinical psychologist and sex therapist serving clients in Tehran, Toronto, Vancouver and worldwide online.
References
1. Rosen NO, Jabbour K, Marcotte-Beaumier G, Rossi M, Bergeron S, Brassard A, Péloquin K. Patterns and predictors of classes of sexual desire trajectories in couples with medical infertility undergoing medically assisted reproduction. J Sex Med. 2026;23(8). PMID: 42447399. doi:10.1093/jsxmed/qdag216
2. Rosen NO, Bailey K, Muise A. Degree and Direction of Sexual Desire Discrepancy are Linked to Sexual and Relationship Satisfaction in Couples Transitioning to Parenthood. J Sex Res. 2018;55(2):214–225. PMID: 28524698. doi:10.1080/00224499.2017.1321732
3. Jang GE, Corsini-Munt S, Shimizu JPK, Belu CF, Wang GA, Rosen NO. Sexual Rejection Behaviors Used by Men with Hypoactive Sexual Desire Disorder. J Sex Marital Ther. 2025;51(8):845–862. PMID: 40955642. doi:10.1080/0092623X.2025.2557476
4. Vowels LM, Mark KP. Strategies for Mitigating Sexual Desire Discrepancy in Relationships. Arch Sex Behav. 2020;49(3):1017–1028. PMID: 32034534. doi:10.1007/s10508-020-01640-y
5. Freud S. On the Universal Tendency to Debasement in the Sphere of Love. 1912. In: The Standard Edition of the Complete Psychological Works of Sigmund Freud, Vol. XI. London: Hogarth Press; 1957: 179–190.
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