Sexuality in long-term relationships is one of the most complex, least discussed, and most misunderstood aspects of couple life. The most frequent complaint couples therapists receive is not about infidelity or money but about the decline of sexual desire: "They no longer want me," "We have sex out of habit," "We have not touched each other in months." According to studies published in Archives of Sexual Behavior, between 15 % and 20 % of stable couples have sex fewer than ten times per year — what researchers call a "sexless marriage." Yet contemporary science — represented by voices like Esther Perel, Sue Johnson, John Gottman, and Emily Nagoski — has demonstrated that the loss of desire is neither inevitable nor irreversible. It responds to emotional, relational, and cultural dynamics that can be understood and transformed.
| Factor | What Esther Perel says | What Sue Johnson says |
|---|---|---|
| Cause of desire loss | Excess familiarity and lack of mystery | Insecurity in the attachment bond |
| What desire needs | Distance, curiosity, surprise | Safety, vulnerability, presence |
| The central paradox | "Desire needs space; love needs closeness" | "Only from safety can we be truly sexually free" |
| Proposed solution | Cultivate otherness: see your partner as a separate being | Strengthen the emotional bond: connection ignites desire |
| Key book | Mating in Captivity | Hold Me Tight |
Esther Perel posed this question with a clarity that transformed the field: "How do you desire what you already have?" In her book Mating in Captivity (2006), Perel argues that desire and domesticity are forces in tension. Erotic desire feeds on mystery, novelty, and a certain distance that allows idealisation. Domestic life feeds on predictability, security, and fusion. When a couple merges completely — sharing everything, knowing everything, having eliminated all mystery — desire loses its fuel.
Sue Johnson offers a complementary and partially opposing perspective: for her, desire loss is not caused by too much closeness but by the absence of real closeness. "Many couples who say they are too close are actually emotionally disconnected. They share a home, routines, and logistics but do not share vulnerability." When the attachment bond is insecure — when you do not know if your partner is truly there for you — the body protects itself. And emotional self-protection is the enemy of sexual openness.
John Gottman, drawing on physiological data, adds another variable: the level of unresolved conflict. Couples with accumulated resentment produce cortisol in each other's presence, which inhibits the sexual response. "You cannot desire someone you perceive as a threat."
Both are right, because they address different sides of the same paradox. Satisfying sexuality in a long-term relationship requires both safety and mystery.
Safety — Johnson's secure attachment — creates the space for vulnerability. Without safety, you cannot be naked (literally and metaphorically) without fear. You cannot express desires, fantasies, or needs that might be rejected.
Mystery — Perel's otherness — creates the space for desire. Without mystery, the other becomes an extension of yourself, as predictable as your own reflection. And you do not desire what you already have.
The synthesis is that attachment security enables erotic risk-taking. Only when you feel truly safe can you allow yourself to explore, play, experiment — introducing mystery from a foundation of trust.
Johnson has extensively researched the connection between attachment and sexuality. Her findings are revealing:
Gary Chapman adds that sexual misunderstandings are often Love Language misunderstandings: for some people, sex is the primary way of feeling loved (physical touch); for others, sex is the result of feeling loved through words of affirmation or quality time. When the couple does not understand this distinction, sex becomes a battleground.
Most couples do not talk about sex. According to the Kinsey Institute, fewer than 30 % of couples have explicit conversations about their sexual life. The silence is not due to lack of interest but to shame, fear of rejection, and the absence of a shared language.
Hendrix, from Imago Therapy, proposes using the Imago Dialogue format to address sexuality: mirror, validate, empathise. "When I want to make love and you say no, I feel…" then mirroring, validation, empathy. This format removes the burden of judgement and allows both partners to explore the topic as allies, not adversaries.
Gottman recommends what he calls "the dreams conversation": exploring not just what each person wants sexually but what sex means to each one. For some, sex is validation; for others, it is play; for others, it is spiritual connection. When you understand the meaning your partner attributes to sex, you change the conversation.
Is it normal for desire to decrease in long-term relationships? Yes, it is statistically normal. The biochemical novelty of falling in love (dopamine, noradrenaline) diminishes between 12 and 24 months. But normal does not mean inevitable or irreversible. Couples who actively work on emotional and erotic connection maintain a satisfying sexual life for decades.
Does low desire always indicate a relationship problem? No. Emily Nagoski, author of Come as You Are, points out that desire has a biological component (hormones, stress, fatigue, medication) that is independent of the relationship. Before looking for relational causes, rule out medical ones.
Do Perel and Johnson contradict each other? No, they complement each other. Perel works on the erotic dimension of desire (mystery, curiosity, play); Johnson works on the attachment dimension (safety, bond, vulnerability). A fulfilling sexual life needs both.
Can I improve my sexual life without talking about it with my partner? Partially. You can work on your sexual self-knowledge and on general emotional connection. But explicit communication about desires, needs, and boundaries is what makes the long-term difference. LetsShine.app offers a safe space to explore these topics with AI guidance before taking them to the conversation with your partner.
Are small children the end of a couple's sexual life? No, but they are a significant challenge. Gottman notes that 67 % of couples experience a significant drop in relational and sexual satisfaction after the first child. The key is prioritising the couple relationship within the new reality: finding moments of connection, asking for help, and not waiting until "the children grow up" to reconnect.
Start free in 2 minutes. No credit card, no commitment. Just you, the people you care about, and an AI that helps you understand each other.
Start free now
Pornography consumption can subtly reshape expectations, desire, and connection within a couple. A nuanced, research-based guide.
Asexuality is a legitimate sexual orientation, not a dysfunction. Understanding it can transform how you approach intimacy and connection.
Infidelity shatters trust, but it does not have to end the relationship. A research-informed guide to rebuilding physical and emotional intimacy after betrayal.