Few topics create as much quiet anxiety in couples as sex. Are we doing it enough? Is something wrong if one of us wants it more? Research gives some reassuring, and some surprising, answers.
More Is Not Always Better
In a widely cited set of three studies with 30,645 participants, psychologists Amy Muise, Ulrich Schimmack, and Emily Impett found that the link between sexual frequency and well-being is curvilinear, not linear. For people in relationships, sex was no longer significantly associated with greater well-being beyond about once a week (Muise et al., 2016, Social Psychological and Personality Science). Muise put it memorably, reversing John Updike's line that "sex is like money; only too much is enough": sex is indeed like money, "just in the opposite direction: only too little is bad" (TIME).
An important nuance: the researchers found that relationship satisfaction helped explain the link between sex and well-being (Muise et al., 2016). In other words, sex matters largely because of what it says about, and does for, the connection between two people. The study was correlational, so "once a week" is an average pattern, not a prescription.
When Two People Want Different Things
Desire discrepancy — when one partner wants more or less sex than the other — is among the main reasons couples seek therapy (Vowels & Mark, 2020, Archives of Sexual Behavior). The European Society for Sexual Medicine notes that the science on this is still limited and complicated, so firm clinical rules are premature (ESSM position statement).
Still, real couples have found ways through. In a study of 229 people, Vowels and Mark identified 17 strategies in five themes: disengagement, communication, solo activity, shared activity (such as trying to trigger desire, trying a different sexual activity, or non-sexual physical closeness), and having sex anyway. Participants were more likely to use partnered strategies than solitary ones (Vowels & Mark, 2020).
The Real Secret: How You Talk About It
The strongest evidence points to communication. A meta-analysis of 93 studies and 38,499 people found that sexual communication was positively associated with relationship satisfaction (r = .37) and sexual satisfaction (r = .43). Crucially, the quality of the conversation was more strongly linked to satisfaction than how often couples talked about sex (Mallory, 2022, Journal of Family Psychology).
What Couples Can Try
- Drop the scoreboard. Compare your sex life to your own needs, not to a national average.
- Talk about sex outside the bedroom, when neither partner feels pressured or rejected.
- Make it a conversation, not a complaint. Share what you enjoy and what you want, not only what is missing.
- Widen the menu. Affection, touch, and different kinds of intimacy count, and research shows couples use them to bridge desire gaps.
- Get support from a sex therapist or couples therapist when the gap causes ongoing distress.
If you and your partner are struggling with this, you do not have to figure it out alone. Visit The Space Between Us, send me a message, or book a session through Alma or Headway.
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This article is educational and is not therapy, medical, or financial advice. If relationship distress, anxiety, or depression is affecting your well-being, please reach out to a qualified professional. If you are in crisis in the US, call or text 988.