Sex can be an important part of a romantic relationship. For some couples, it provides pleasure, affection, emotional closeness and a way to express desire. For others, sexual activity is less central, infrequent or absent—and their relationship may still be loving and fulfilling.
What matters is not whether a couple meets a supposed ideal frequency. A healthy intimate relationship depends more on mutual desire, communication, respect and compatibility.
Problems are more likely to arise when partners have significantly different expectations, feel unable to discuss intimacy or experience pressure to participate. Understanding the possible role of sex—and its limitations—can help couples build a relationship that suits both people.
Sex and Intimacy Are Related but Not Identical
Sexual activity can be intimate, but intimacy is much broader than sex.
Emotional intimacy may involve:
- Feeling safe enough to be vulnerable
- Sharing thoughts and worries
- Receiving affection and reassurance
- Trusting one another
- Spending meaningful time together
- Feeling accepted rather than judged
- Supporting each other during difficulties
- Communicating honestly about needs and boundaries
Sex may strengthen some of these feelings when it is wanted and enjoyable. However, sexual activity without trust or emotional safety may leave someone feeling disconnected rather than close.
Similarly, a couple can experience deep intimacy through conversation, affection, shared experiences and emotional support even when intercourse is not part of their relationship.
1. It Can Provide a Form of Emotional Connection
Consensual sexual activity may give partners an opportunity to slow down, focus on one another and express affection physically.
The closeness can come from more than the sexual act itself. Eye contact, kissing, touch, reassurance and conversation may all contribute to feeling connected.
Research has identified links between sexual satisfaction and relationship satisfaction, although the relationship appears to work in both directions: satisfying intimacy may support the relationship, while a stronger relationship may also create better conditions for satisfying sex. A longitudinal study of married couples found interconnected changes in sexual satisfaction, relationship satisfaction and sexual frequency over time.
This does not mean that sex automatically creates emotional closeness. The experience is more likely to feel connecting when both partners:
- Genuinely want to participate
- Feel physically and emotionally safe
- Can communicate freely
- Respect each other’s boundaries
- Are not focused solely on performance
- Feel able to stop or change activities
2. It Can Be a Way to Express Affection and Desire
People communicate affection differently. One person may value words of appreciation, while another may feel especially connected through physical touch.
Within a mutually desired sexual relationship, sex can communicate messages such as:
- “I am attracted to you.”
- “I trust you.”
- “I enjoy being close to you.”
- “Your pleasure matters to me.”
- “We can be vulnerable together.”
However, sex should not be treated as proof of love or commitment. A partner may decline because of fatigue, pain, stress, health changes or simply not being in the mood. None of these automatically means that love or attraction has disappeared.
Expressions of affection outside sexual activity remain important. Compliments, kisses, thoughtful gestures and everyday physical warmth help prevent the entire burden of connection from being placed on sex.
3. Shared Pleasure Can Support Relationship Satisfaction
Pleasure is a legitimate aspect of sexual wellbeing. The World Health Organization describes sexual health as involving physical, emotional, mental and social wellbeing, together with respectful, pleasurable and safe experiences free from coercion.
When both partners enjoy an experience, shared pleasure can contribute to positive feelings about the relationship. Couples may also learn more about each other’s bodies, preferences and ways of communicating.
Sexual satisfaction should not be confused with achieving orgasm every time. A satisfying encounter might involve:
- Affectionate touch
- Kissing
- Mutual masturbation
- Oral sex
- Intercourse
- Using a mutually agreed toy
- Massage
- Exploring a fantasy
- Simply stopping when both people feel content
No particular act is required. Partners can define sex and satisfaction in ways that reflect their bodies, orientations, values and circumstances.
ActivHomme’s article on experiencing orgasms explains why pleasure should not become a performance test.
4. Sex Can Encourage Honest Communication
A healthy sexual relationship requires communication about subjects that may initially feel awkward:
- Consent
- Contraception
- STI testing
- Pleasure
- Pain
- Fantasies
- Boundaries
- Changes in desire
- Preferred frequency
- Activities either person does not want
Learning to discuss these subjects respectfully can develop communication skills that benefit the wider relationship.
Sexual communication is not limited to conversations in the bedroom. Discussing expectations at a neutral time—when neither partner is initiating sex or feeling rejected—often reduces pressure.
Useful questions include:
- “What helps you feel emotionally close to me?”
- “Is there anything you would like more or less of?”
- “What makes it difficult for you to relax?”
- “How would you like me to initiate?”
- “Are you experiencing discomfort?”
- “What kinds of affection feel good when you do not want sex?”
A 2025 study of couples found that the presence and quality of sexual communication were positively associated with emotional intimacy and relationship satisfaction. View the study on PubMed.
5. It May Provide Relaxation and Enjoyment
Pleasurable sexual activity may feel relaxing, reduce tension temporarily or help partners shift their attention away from everyday responsibilities.
This does not make sex a medical treatment for stress, anxiety or depression. It should never be recommended as a replacement for therapy, medication or professional care.
The original article advised readers to choose sex instead of antidepressants. That recommendation must be removed. Antidepressants are prescribed for medical reasons, and suddenly stopping them may cause withdrawal effects or a return of symptoms.
Some medicines can affect desire, arousal or orgasm. If this happens, discuss it with the prescribing professional rather than changing the dose independently. The NHS guide to low libido explains that stress, relationship concerns, health conditions, hormonal changes and certain medicines may all affect sexual desire.
6. It Can Create Playfulness and Novelty
Long-term relationships can become dominated by work, parenting, household tasks and routine. Sexual exploration may provide a private space for curiosity and playfulness.
Novelty does not require extreme positions or activities. It may come from:
- Choosing a different time of day
- Changing the lighting or music
- Taking more time with affectionate touch
- Sharing a fantasy
- Trying a mutually selected toy
- Giving one partner greater control
- Planning an uninterrupted evening
- Exploring a new but comfortable position
- Taking intercourse off the agenda
The goal is not to perform or constantly produce something new. Novelty works best when both partners are interested and neither feels compared with pornography, previous partners or unrealistic online images.
For practical ideas, see ActivHomme’s guide to adventurous positions and safer exploration.
Is Sex Necessary for a Successful Relationship?
No universal amount of sex is required for a relationship to be successful.
Some couples have sex frequently. Others have it occasionally, and some maintain loving romantic relationships without sexual activity. This may include asexual partners, people with health limitations, couples living apart and partners whose relationship has changed over time.
A relationship is not unhealthy simply because it has less sex than another relationship. The more useful questions are:
- Are both partners comfortable with the situation?
- Can they discuss it without shame or pressure?
- Do they have other satisfying forms of intimacy?
- Does either person feel persistently rejected or obligated?
- Are pain, medication or health problems being ignored?
- Can they negotiate differences respectfully?
A low frequency becomes a relationship concern when it causes distress, resentment or disconnection—not merely because it falls below an invented standard.
Understanding Mismatched Desire
Partners rarely experience exactly the same level of desire at the same time. Differences are common and may change across the relationship.
Sexual desire may be influenced by:
- Stress and poor sleep
- Relationship conflict
- Pregnancy or caring for a baby
- Menopause
- Medication
- Depression or anxiety
- Chronic illness
- Erectile difficulties
- Vaginal dryness
- Genital or pelvic pain
- Body-image concerns
- Past unwanted experiences
- Feeling emotionally disconnected
- Lack of privacy
- Different patterns of spontaneous and responsive desire
Mismatched desire does not make either person defective. The higher-desire partner is not automatically demanding, and the lower-desire partner is not automatically withholding affection.
The problem is how the difference is managed.
Avoid Pressure and “Duty Sex”
Consent must be freely given each time. Being married, dating for a long time or having agreed previously does not create an obligation.
Pressure can include:
- Repeatedly asking after someone has declined
- Sulking or withdrawing affection
- Suggesting a partner must be unfaithful
- Treating sex as a marital duty
- Using gifts or financial support as leverage
- Threatening to end the relationship
- Comparing a partner with someone else
- Continuing when the person becomes still or uncomfortable
Sex obtained through pressure is unlikely to create the closeness couples want. It may instead produce fear, resentment and avoidance.
A respectful partner can feel disappointed while still accepting “no.” Both people should remain free to pause, change an activity or withdraw consent at any point.
Do Not Use Sex as a Test of Fidelity
A reduction in sexual activity is not proof that a partner is cheating.
Assuming infidelity may intensify insecurity and conflict while overlooking more likely explanations such as exhaustion, discomfort, stress or reduced emotional connection.
Ask about the change directly and without accusation:
“I’ve noticed that we have been less physically close recently. I miss feeling connected to you. Is something affecting how you feel?”
This approach focuses on understanding rather than blame.
Maintain Safer-Sex Practices
Being in a relationship does not automatically eliminate pregnancy or STI risks.
Couples should discuss:
- Whether the relationship is sexually exclusive
- STI testing
- Contraception
- Condom or barrier use
- What happens if protection fails
- Whether either person has other partners
- Which activities are within their boundaries
Use a new condom for every act and choose compatible lubricant. Testing is an act of shared responsibility, not an accusation.
Read ActivHomme’s complete guide to safer sex for more information about barriers, testing and contraception.
Building Intimacy When Sex Is Not Possible
Illness, disability, childbirth, menopause, medication or relationship circumstances may temporarily or permanently change a couple’s sexual life.
Connection can still be maintained through:
- Cuddling
- Holding hands
- Kissing
- Massage
- Verbal affection
- Shared showers without sexual activity
- Private conversations
- Dates
- Mutual reassurance
- Sleeping close together
- Nonsexual touch
- Sexual activities that do not cause pain
Couples may need to expand their definition of intimacy rather than attempting to recreate exactly what they did earlier in the relationship.
When to Seek Professional Support
Consider speaking with a healthcare professional when there is:
- Persistent pain during or after sexual activity
- Unexpected bleeding
- Repeated erectile difficulty
- Significant vaginal dryness
- A sudden or distressing loss of desire
- Difficulty with arousal or orgasm that causes concern
- Symptoms of an STI
- Sexual changes following new medication
- Depression, anxiety or trauma affecting intimacy
A doctor can investigate physical causes and discuss suitable treatment. Do not stop prescribed medicine without professional advice.
A qualified relationship counsellor or sex therapist may help when the main difficulty involves mismatched desire, communication, avoidance, shame or unresolved conflict.
The Bottom Line
Sex can contribute to closeness, pleasure, communication and playfulness in a relationship—but only when it is mutually wanted and respectful.
It cannot guarantee fidelity, repair damaged trust or prove that a relationship is healthy. Nor is frequent sex required for every couple.
Rather than asking how often a couple “should” have sex, ask whether both people feel safe, heard, valued and able to discuss their needs. The quality of the interaction and the freedom to say both “yes” and “no” matter more than achieving a particular number.
For related guidance, read ActivHomme’s articles on the sexual response cycle, how intimacy affects the brain and the health benefits of sexual activity.
Frequently Asked Questions
How often should couples have sex?
There is no medically required or universally healthy frequency. A suitable pattern is one that both partners find comfortable and can discuss without pressure.
Can a relationship be healthy without sex?
Yes. Some people have loving and committed relationships with little or no sexual activity. Compatibility, affection, trust and communication are more important than matching an external standard.
Does more sex automatically improve a relationship?
No. Mutually desired and satisfying intimacy may support closeness, but unwanted or pressured sex can damage trust. Relationship quality also influences sexual satisfaction.
Is a lack of sex a sign of infidelity?
Not necessarily. Stress, exhaustion, pain, medication, health conditions and relationship difficulties can all reduce sexual interest. A respectful conversation is more useful than an accusation.
What should couples do when their sex drives differ?
Discuss the difference away from the bedroom, identify possible physical or emotional influences and explore forms of intimacy both people welcome. Professional guidance may help when the difference causes ongoing distress.
Can sex treat anxiety or depression?
No. Although enjoyable sexual activity may feel relaxing, it is not a replacement for mental-health treatment. Never stop prescribed medication without consulting the prescribing professional.
Does sex always require penetration?
No. Couples may define sex and intimacy through many mutually desired activities, including touching, kissing, oral sex and mutual masturbation. Penetration and orgasm are not mandatory.
When should sexual problems be discussed with a doctor?
Seek advice when changes are sudden, persistent or distressing, or when there is pain, bleeding, erectile difficulty, significant dryness, suspected infection or a possible medication-related effect.
