Open Relationship Meaning: What an Open Relationship Is
An open relationship is a committed relationship in which both partners agree that sex, and sometimes dating, with other people is allowed. The whole meaning hangs on that word agree: nothing is hidden, the couple sets the terms together, and the relationship between them stays the main one.
That is the short version. The longer one is more interesting, because two couples can both say "we're open" and mean very different things. Below: what the term covers, what it does not, the shapes it usually takes, and what to do if your partner has just said the words out loud for the first time.
What is an open relationship?
Three things make a relationship open.
- An established couple. Two people who see themselves as partners, married or not.
- Consent from both. Each knows about the arrangement and has said yes to it, freely.
- Agreements. Some shared understanding of what is fine, what is not, and how you keep each other in the loop.
Take Priya and Tom, together nine years. They agreed that either of them may sleep with someone else when travelling for work, as long as they tell each other by the next morning. Now take Dani and Marcus, who only ever meet another couple together, never apart. Those are two very different lives, and both are open relationships.
If you want a one-line open relationship definition: a relationship where the partners have openly agreed that being with other people is not cheating.
Open relationship meaning: how people actually use the words
The phrase works on two levels, and a lot of confusion comes from mixing them up.
The broad sense. Some people use "open relationship" for any relationship that is not monogamous by agreement. In this sense it is a rough synonym for ethical non-monogamy, and it covers everything from a once-a-year kiss at a party to a household of four.
The everyday sense. In ordinary conversation, most people mean something narrower: one couple stays firmly at the centre, and what happens outside is mostly sexual or casual. Friendships, flirtation, one-off nights, maybe a regular lover. Not a second romance with its own holidays and anniversaries.
Seen as a spectrum, it looks roughly like this:
- Monogamish: mostly monogamous with small, agreed exceptions. Our guide to being monogamish covers it.
- Swinging: couples who meet other couples or singles, usually together, mostly for sex and fun. See what swinging is.
- Open: each partner has some freedom to connect with others, together or apart.
- Polyamory: room for more than one loving relationship. The line between the last two is fuzzy, and we untangle it in open relationship vs polyamory.
For the full list of shapes, with examples, see the types of non-monogamy.
The choices every open couple makes
Under the label, every open couple quietly answers the same handful of questions. Their answers are what make their relationship theirs.
Together or apart
Some couples only explore as a pair: a threesome, an evening with another couple, a party they attend side by side. Others date separately and come home to each other. Plenty mix the two. Together tends to feel safer at the start. Apart tends to need more trust and more talking.
Sex only, or feelings too
Many open couples keep outside connections physical and friendly, and agree to talk if something deeper starts to grow. Others are relaxed about affection and ongoing lovers. Neither is more advanced. They are just different deals.
How much you tell each other
Some couples share every detail and enjoy it. Some share headlines: "I'm seeing someone Thursday, home by midnight." A few choose "don't ask, don't tell", which sounds simple and tends to be the hardest to keep comfortable, because silence leaves room for imagination to fill in the gaps.
Both of you, or one of you
Not every open relationship is symmetrical. Sometimes one partner has a stronger wish to explore and the other is content at home. That can be a happy arrangement, as long as the partner staying home is choosing it, not tolerating it.
What an open relationship is not
A few misunderstandings come up again and again.
- It is not cheating. Cheating is breaking an agreement. An open couple has simply made a different one. You can still cheat in an open relationship, by lying or by going past what you both agreed.
- It is not a repair kit. Opening up puts weight on a relationship. A couple who already struggle with trust usually find that weight lands on the cracks.
- It is not a free-for-all. Most open couples have more agreements than monogamous ones, not fewer. They are just said out loud. If you are curious what those look like, read our open relationship rules.
- It is not a verdict that someone is not enough. Wanting variety is human. It says very little about how much you love the person you go home to.
Why couples choose open relationships
You would not be unusual for considering it. A 2017 study by Haupert and colleagues found that about one in five single US adults had been in a consensually non-monogamous relationship at some point.
The reasons people give are usually ordinary. Curiosity. Variety without lying. A partner who is bisexual and would like room to explore that side of themselves. Long stretches apart because of work or travel. The simple pleasure of sharing an adventure as a couple. And yes, some people are just wired to enjoy more than one person, and would rather say so than hide it.
Does it make people less happy? Research by Conley and colleagues reported similar relationship satisfaction in consensually non-monogamous and monogamous relationships. That does not mean it suits everyone, and we look at the honest version in do open relationships work.
One thing the articles rarely mention: most people find their footing not by reading, but by meeting a few couples who already live this way. A normal evening with them answers more questions than a month of searching.
What is an open marriage and how does it work?
An open marriage is the same idea with a wedding ring on it. The core is identical: both spouses agree that connections outside the marriage are allowed. What changes is the scaffolding. A shared home, maybe children, families who ask questions, a social life you built together. Married couples usually need clearer agreements about the house, the calendar and who knows. Our guide to open marriage walks through how couples handle those layers.
What to do when your partner asks for an open relationship
If your husband, wife or partner has just raised it, you do not have to answer tonight. A few things help.
- Take a breath before you reply. "I'm surprised. I need a few days to think" is a complete and fair answer.
- Ask what they picture. A kiss at a party and a weekly date with someone else are very different requests.
- Ask why now. Curiosity is one conversation. Someone specific already in mind is another.
- Say what you feel, all of it. Fear, curiosity and anger can arrive at once.
- Remember no is a valid answer. So is "not yet" and "only this much".
We see this often with couples who are new to our community: the questions that felt enormous at the kitchen table shrink quickly over one dinner with a couple who have been open for years. If you do decide to try, our step-by-step guide on how to open a relationship starts at the very first conversation.
Words you will hear
- Primary: the main partner, often the one you live with.
- Metamour: your partner's other partner.
- NRE: new relationship energy, the giddy rush of someone new. See new relationship energy.
- Compersion: feeling glad that your partner is happy with someone else.
- Unicorn: a single woman who dates a couple, on her own terms.
Meeting people who get it
An open relationship is, at heart, an honest conversation that keeps going. The couples who enjoy it most tend to have friends they can talk to without explaining themselves, people who have stood exactly where you are standing. If you would like to meet couples and single women like that, you can join Rope & Candy. It is free and takes one email, and when someone from our team is in your city, we meet you for a coffee or a dinner, with nothing expected after.
Questions people ask
Is an open relationship the same as polyamory?
Not quite. In everyday speech an open relationship keeps one couple at the centre and allows mostly sexual or casual connections outside it, while polyamory makes room for more than one loving relationship. Plenty of people sit somewhere between the two.
Can an open relationship be one-sided?
Yes. Some couples agree that only one partner sees other people, often because the other simply has no wish to. It works when the partner who stays home is genuinely content with the deal, not quietly putting up with it.
Do open couples tell each other everything?
Some do, some share only the headlines, and some prefer not to hear anything at all. There is no right amount. What matters is that both of you agreed to the amount, and that you can change it later.
Is it normal to feel jealous in an open relationship?
Very normal, especially at the start. Jealousy is a feeling, not a verdict on the relationship. Most open couples learn to talk it through rather than wait for it to disappear.