Intimacy and Attraction in Long-Term Relationships: Why the Spark Changes, and How to Keep Both

There is a particular kind of evening that many of us in long relationships know well. The dishes are done, the plans for the weekend are agreed, we are kind to each other and we are tired, and somewhere in the quiet a thought arrives that we would not say out loud: I love this person, and I am not sure I want them anymore. Is that the beginning of the end, or something else?

Relationship researchers have a calmer reading of that moment. Intimacy and attraction are two different things, and a long relationship can deepen the first while the second goes quiet. In a 2023 review, the psychologists Amy Muise and Sophie Goss called sexual desire “one of the most fragile relationship elements, often declining over time”, and argued that closeness is not what kills it.

So this page does three things. It explains what intimacy and attraction are, why the wanting tends to fade while the closeness stays, and then gives five small steps the two of you can start this week to keep both. The image we will use throughout is Esther Perel’s: closeness is the fire, and a little space is the air it needs.

What is the difference between intimacy and attraction?

Intimacy is the experience of being known and cared for. Attraction is the experience of wanting. We can have a great deal of one and little of the other, which is why the two get confused and why their separation can feel so frightening from the inside.

Intimacy, in the research, is a process rather than a feeling. The psychologists Harry Reis and Phillip Shaver described it in 1988 as something that happens between two people, built from what each person discloses and how responsively the other answers. A 1998 diary study by Jean-Philippe Laurenceau and colleagues tested that model and found it held up, with one detail worth noticing. Telling someone what we feel built more intimacy than telling them facts. Intimacy grows from the small, repeated moments in which we let ourselves be seen and are not let down.

Attraction, in a long relationship, mostly means desire. It is the pull toward the other person: noticing them, wanting to be near them, wanting them sexually. Perel’s distinction in the quote above is the clearest one we know. Love wants to have and to keep. Desire wants to reach for something not yet fully had. That is why the same safety that deepens intimacy can, over years, leave desire with less to reach for.

	Intimacy	Attraction
What it is	Being known and cared for	Wanting the other person
What feeds it	Disclosure, responsiveness, trust	Some distance, newness, seeing them freshly
How it usually changes over years	Can deepen, and also wears down without tending	Often fades from its early intensity
What it feels like when it is missing	Lonely, even side by side	Fond but flat, more roommates than lovers
What it needs from us	Showing up and listening	A little air in the closeness

Neither is the “real” love and neither is the shallow one. Most of us want both, in the same person, for a long time, which is one of the most ambitious things we ever ask of a relationship.

Why attraction fades while closeness stays

Attraction usually fades not because something has gone wrong, but because of how desire works. That is the most useful thing we can tell a frightened reader, and the research supports it from several directions. A team led by Gurit Birnbaum and Harry Reis opened a 2016 paper with the plain observation that sexual desire “tends to subside gradually over time” for many couples.

One explanation is that passion tracks change, not level. In 1999 the psychologists Roy Baumeister and Ellen Bratslavsky proposed that passion comes from rising intimacy: the weeks when we are learning someone fast feel electric because the closeness is growing. Once intimacy is high and stable, passion goes quiet, even though the closeness is greater than ever. They were careful to call this a proposal, not a proven law. But it explains something many of us notice: the spark often fades just as the relationship becomes the most secure it has been.

A second explanation comes from couples themselves. In a 2010 study, Karen Sims and Marta Meana interviewed 19 married women who had lost desire in their marriages and asked them why. Three themes came up again and again:

• Institutionalization of the relationship: in our words, a marriage that has become a set of arrangements.
• Over-familiarity: knowing each other so well that little is left to discover.
• The de-sexualization of roles: in our words, becoming mostly parent, co-manager of a household, the one who remembers the bins.

Notably, these women talked more about those dynamics than about relationship problems. Many of us are not fighting. We have become good at running a life together. It is a small sample of one group, and it does not speak for everyone, but the themes are easy to recognize.

A third is that life arrives. Sai’s first version of this page traced how attraction moves through the seasons of a long relationship: the early fireworks, the arrival of children, careers in midlife, illness and caregiving later on. The research on one of those seasons is clear enough to print. A 2017 review by Brian Doss and Galena Rhoades, while noting that the literature is mixed, concluded that the preponderance of evidence shows the arrival of a first baby has a negative effect on relationship functioning for most couples, and that as children grow up, the relationship functioning of parents and non-parents converges. A hard season is not necessarily a permanent climate.

And the comfortable story that “passion fades but friendship deepens” is only half true. Most theorists have assumed that passionate love declines quickly while companionate love holds steady. When Elaine Hatfield and colleagues interviewed 53 newlywed couples soon after marrying and again a year later, and interviewed 240 women married a median of 33 years, they found, to their own surprise, that time seemed to wear down both kinds of love about equally. Intimacy is not automatic either. It also needs tending.

Is too much closeness the problem?

No. The research suggests closeness goes with more desire, not less. What seems to matter is pairing that closeness with a sense of each other as two separate people. This is the part of the subject most worth getting right, because the opposite belief leads some of us to pull away from our partners in the hope of wanting them again.

Muise and Goss reviewed the evidence for the idea that couples can become “too close” and found it did not hold. Higher closeness went with higher desire. In an interview with the Association for Psychological Science in 2024, Muise described combining data from several hundred couples to look for a point where closeness started to dampen desire, and finding none. The association stayed linear: more closeness, more desire.

What they proposed instead is a second ingredient they call otherness, a term Muise credits to the couples therapist Esther Perel: the distinctiveness between partners that lets us see each other in a new light. When people are asked what fuels desire in long relationships, Muise said, one of the key themes is autonomy, including physical distance and “having personal projects that don’t involve a partner.” What detracts is the opposite, over-familiarity, two people so merged that neither surprises the other.

Perel has asked people in more than 20 countries a simple question: when are you most drawn to your partner? She reports a few answers that keep coming back, across cultures. When we have been apart and reunite. And when we see them in their element, doing something they are good at, absorbed, admired by others. In both, the familiar person becomes slightly unfamiliar again. That is the air the fire needs.

Romantic love can last. A 2009 review by Bianca Acevedo and Arthur Aron found that romantic love, without the obsessive quality of the early stage, exists in long marriages and is strongly associated with satisfaction. The obsessive quality is typical of the start, and in long relationships the review found it went with lower satisfaction. Something warmer, and still wanting, can last.

So where does the air come from?

How to keep intimacy and attraction alive: five steps

Keeping both alive comes down to two kinds of work: deepening how we know each other, and making room to see each other freshly. The five steps below do one or the other. None needs money, and each starts with something small enough to do this week. They work best done by both of you, though any one of them can be started alone.

1. Tell your partner one feeling this week, not one fact

Pick one evening and tell your partner something you felt today, not something that happened. “I felt invisible in that meeting” rather than “the meeting ran late.” That is the kind of disclosure the Laurenceau study found built intimacy most. If the words do not come easily, write the feeling down first, in a notebook or a notes app. If you want somewhere that does a little more with it, VentSpace is a journaling app that turns what you write into a clear read on your life balance, plus small, doable next steps. Prefer to try it on your laptop first? VentSpace Live runs in your browser, free, with nothing to install. It is ours, and it is free to start on Google Play. Either way, the point is to bring the feeling back to the person, not to leave it on the page.

• Do I know what my partner is worried about at the moment?
• When did I last tell them something I was afraid of?
• Are there subjects we both quietly avoid? Why those?
• Do I feel understood when I share something, or only heard?

It does not have to be profound. A small true feeling, said plainly, is enough to start.

2. Answer well when they reach for you

The next time your partner tells you something, put the phone down, turn toward them and ask one more question than you normally would. Being responsive, showing that we understood, that we care and that what they said matters, is the other half of intimacy. It turns out to matter for attraction too. Birnbaum, Reis and colleagues found that responsiveness was associated with increased desire, more strongly in women, partly because a responsive partner made the other person feel special. Sai’s first version of this page made a related point: a daily hug can be a way of telling each other you are home. Small physical warmth, laughter, and arguing kindly instead of to win all belong here.

• How do I usually respond when my partner shares good news?
• When they are upset, do I listen first or fix first?
• How often do we touch in ordinary moments, not only in bed?
• When we disagree, am I trying to understand or trying to be right?

Nobody does this every time. Doing it a little more often is the whole step.

3. Do something new together, on purpose

This week, suggest one thing neither of you has done before, however small: a dish from a cuisine you do not know, a trail you have not walked, a class, a museum you keep meaning to visit. In a set of studies, Arthur Aron and colleagues found that couples who spent seven minutes on a novel and arousing task together reported a bigger rise in relationship quality than couples given a more mundane one. Later work by Jennifer Tomlinson and colleagues suggests the sense of growing and learning together matters more than the physical excitement, so it need not be a rollercoaster. For ideas, our list of romantic things to do together and our relationship building activities are a good place to start.

• When did we last learn something new together?
• What is one thing each of us has always wanted to try?
• Are we open to the other person’s idea, even if it is not ours?
• Which of our routines could we break, just once?

It is fine if it goes badly. A disastrous cooking class is still new.

4. Let each other be separate people

Ask your partner what they are into at the moment that has nothing to do with you, and then make room for it. Protect an evening for their project, their friends, their sport. Keep one of your own. This is the otherness Muise and Goss describe, and the “spaces in your togetherness” Gibran wrote about a century ago. Then, once in a while, go and watch them do it. Seeing a partner absorbed in something they love is one of the answers Perel hears again and again.

• What does my partner care about that I know little about?
• What do I do that is mine, and do I still do it?
• When did I last see my partner in their element?
• Do we respect each other’s beliefs and ways of seeing the world, even where they differ?

Wanting time apart does not mean loving them less. It is often what lets us want them again.

5. Talk about sex as something you choose, not something that should just happen

Find a calm moment, away from the bedroom, and ask each other one question: what would make it easier for you to want to? It is tempting to wait for desire to arrive the way it did at the start. Perel calls this the myth of spontaneity: in a long relationship, whatever was going to just happen already has. Planning does not make intimacy less real. It makes it chosen. Two findings help keep the pressure off. Across three studies of more than 30,000 people, Muise and colleagues found that well-being was no higher for people having sex more than once a week, so the aim is not a quota. And in a study of 44 long-term couples, those more motivated to care about their partner’s sexual needs kept their desire better over four months. Caring about each other’s needs is never the same as agreeing to sex you do not want. Desire is never owed.

• Are we both satisfied with our sex life, and have we ever asked each other?
• How comfortable am I saying what I want, or what I do not?
• What gets in the way: tiredness, stress, the children, something unsaid?
• What would make a planned evening feel like a choice and not a chore?

This conversation is awkward for almost everyone. Awkward is not the same as wrong.

Pulling it all together

Start with a feeling. This week, tell your partner one thing you felt rather than one thing that happened. Write down which evening you will do it.

Then answer well. The next time they share something, put the phone down and ask one more question. Write down one moment where you did it.

Add something new. Choose one small thing neither of you has tried, and put it in the calendar for this month.

Keep some air. Ask about one thing in their life that is theirs alone, and protect one evening for something that is yours.

Then talk about wanting. Pick a calm moment for the question “what would make it easier for you to want to?”, and listen to the answer without defending yourself.

None of this guarantees the early intensity comes back. What it does is give the fire more of what it needs: closeness to burn and enough air to breathe.

When a fading spark needs more than this

If the change in desire is sudden, painful or worrying you, it is worth talking to a professional rather than trying harder alone. A systematic review of 64 studies by Kristen Mark and Julie Lasslo noted that problems with desire are strongly linked to problems in the relationship, and that desire naturally ebbs and flows. The review grouped the factors into individual, relationship and wider social ones, a reminder that not every cause sits inside the relationship.

• A doctor is the right first step if desire has dropped suddenly, if sex has become painful, or if the change started around a change in your health, such as a new medication, a pregnancy or an illness.
• A certified sex therapist works with sexual concerns, including differences in desire between partners. In the United States, the American Association of Sexuality Educators, Counselors and Therapists (AASECT) keeps a referral directory of certified therapists at aasect.org.
• Couples therapy is a reasonable step, not a last resort, if the distance has turned into resentment, or if every attempt to talk ends in a fight.

One thing is never a desire problem: pressure. If a partner pressures, guilts or forces you into sex, or punishes you for saying no, that is not about attraction. You can talk to someone confidentially. In the United States, the National Domestic Violence Hotline is free and open 24/7: call 1-800-799-7233 or text START to 88788. If you are in immediate danger, call 911.

Questions people ask

Is it normal to lose attraction in a long-term relationship?

Yes, it is common. Researchers describe sexual desire as fragile and often declining over time, and a review of 64 studies notes that desire ebbs and flows within the same person. Losing the early intensity is not, on its own, a sign that the relationship is failing.

Can attraction come back after it fades?

It can, at least for some couples. Research links novel shared activities, responsiveness and a sense of each other as separate people with higher desire and relationship quality. A 2009 review also found that romantic love without the early obsessive quality exists in long marriages. Nobody can promise it for a particular couple, and it usually returns slowly.

How long does the honeymoon phase last?

There is no reliable number, and we would be wary of any page that gives one. Couples differ a great deal. What research does suggest is that the early, obsessive kind of passion rarely lasts, while a calmer romantic love can.

How often should couples have sex?

There is no right number. In three studies of more than 30,000 people, well-being rose with sexual frequency only up to about once a week, and was no higher beyond that. What matters more is whether both of you are satisfied, which is something to ask about rather than measure.

Do love languages keep attraction alive?

Probably not in the way the book suggests. A 2024 review by Emily Impett, Haeyoung Gideon Park and Amy Muise found the research does not strongly support the idea that each person has one preferred love language. They suggest thinking of love as a balanced diet: most of us need a range of care, not one kind.

Is fading attraction caused by hormones?

That is a popular explanation, and the version that circulates online, with a “cuddle hormone” and a “monogamy molecule”, is far tidier than the science. We have not printed it here for that reason. The relationship research above is better established and gives you more to work with.

In a nutshell

First, intimacy and attraction are different, and losing some of the second does not mean losing the first. Closeness is not the enemy of desire. A little air in it, through newness, separateness and choosing each other on purpose, is what desire tends to need.

Second, this does not change in a weekend. The research describes slow processes, and a couple who has drifted over years will usually find their way back over months, unevenly, with setbacks. That is not failure. It is what tending a fire looks like.

About this article

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Reviewed: October 2026. Prices, platforms and product availability move quickly, and anything we could not verify at the time of writing is marked as unverified rather than turned into a number.

Corrections. If something here is wrong, we would rather know. Corrections are made in place, with a note saying what changed.