For years, the public conversation around infidelity was framed almost entirely as a male issue. Cheating husbands. Wandering eyes. Dad-on-the-business-trip clichés that fed a thousand BBC dramas. But anyone who actually works in this space — and Illicit Encounters has been around for over twenty years now — knows the picture is rather different. About 45% of our 1.5 million UK members are women. Not casual browsers. Active members. Married, in long-term relationships, or somewhere in the complicated middle.
So when the question gets asked — and it gets asked a lot, particularly by suspicious husbands typing it into Google at half past midnight — the honest answer isn’t a single tidy reason.
It’s a tangle of reasons. Some predictable. Some that even the women themselves struggle to put into words until they’re already several months into something they didn’t plan.
Here’s what nearly two decades of conversations with female members has taught us about why married women have affairs.
They feel invisible at home in a way husbands rarely understand
The single most common phrase we hear from female members — by a margin that isn’t even close — is some version of “I felt invisible.” Not unloved, necessarily. Not even unhappy, in the dramatic sense. Just unseen. Walking past their husband at breakfast and getting a grunt over the iPad. Going to the trouble of choosing an outfit on a Saturday and getting no reaction. Saying something interesting at dinner and watching it land like a coaster on a wet table.
Hannah, 44, from Sheffield, told us she’d worn a red dress to a friend’s wedding and her husband had said precisely one thing about it: “Are we leaving by ten?” That was the night, she said, that something inside her quietly closed.
The thing about feeling invisible is that it doesn’t show up on relationship surveys. There’s no diagnostic code for “I am still here, but I have stopped being noticed.” Husbands often don’t realise it’s happening — partly because they themselves are tired, distracted, or quietly checked out for their own reasons. But for women, the cumulative weight of going through a decade unnoticed is heavier than most marriages account for.
An affair, when it begins, is rarely about wanting someone else. It’s about wanting to be seen again — by anyone.
Sex isn’t usually the headline
Plenty of male members of Illicit Encounters say they joined for sex. They’ll often say so on the first message. Plenty of female members do too — let’s not pretend otherwise. But the proportions are markedly different.
When we surveyed our female members about their primary motivation for joining, “physical intimacy” came fourth. Behind “feeling desired,” “good conversation,” and “feeling like myself again.” For male members, physical intimacy is usually first or second.
This matters. Because if a husband is trying to understand his wife’s potential affair through the frame of “she just wanted more sex” — he’s probably missing the point entirely. The sex, when it happens, is often the easier thing to explain. The real ache is more diffuse. It’s about being treated as someone interesting, rather than someone competent. About someone leaning forward when she speaks. About someone messaging her midweek with a thought rather than a question about the council tax.
Strip away the sex, and what most women describe is something closer to flirtation. Sustained, attentive, adult flirtation — the kind that vanished from their marriage so gradually neither party noticed.
Mid-life is heavier on women than the culture admits
There’s a polite British reluctance to talk seriously about midlife in women. We get jokes about hot flushes and a lot of corporate “wellness” content about hormones, but the deeper conversation — about identity, mortality, and the recalibration that often happens around forty-five — barely registers.
For many of our female members, the urge to pursue something outside the marriage arrives during a stretch of quiet existential reckoning. The kids are leaving. The parents are ageing or already gone. Career has either plateaued or doesn’t feel like enough. The body is changing. And the marriage, which once felt like the centre of life, increasingly feels like one of many pieces of furniture in a room she didn’t entirely choose.
It isn’t a crisis, exactly. It’s a question. Is this it?
Joanne, 49, a GP in Bristol, told us she signed up the morning after her youngest daughter’s first night at university. She didn’t message anyone for months. She just wanted, she said, to know that the version of her that hadn’t been someone’s mother for twenty years still existed somewhere.
This is rarely framed publicly as a reason for affairs. It probably should be.
Emotional neglect at home doesn’t always look dramatic
The phrase “emotional neglect” sounds severe. Most of our female members would never use it about their marriages. They’d say things like, “He’s a good man, but…” Or, “We just stopped really talking somewhere around the second baby.” Or, “He’s there. He’s just not… there.”
Emotional neglect in long marriages is rarely cruelty. It’s the slow ebb of curiosity. He stops asking about her day in a way that suggests he’s actually interested. She stops volunteering. He stops noticing what’s bothering her. She stops showing him. The relationship reverts to logistics. Bins. School run. Insurance. Holiday plans.
By the time most women look outside the marriage, the emotional withdrawal has already taken place internally. Often years earlier. The affair is sometimes the first time they articulate it — even to themselves.
They are quietly furious about being the one who carries everything
This one comes up so often it’s almost a category of its own. Among married women in their late thirties to mid fifties, there is an enormous, often unspoken resentment about who actually does the running of the household. Who books the appointments. Who notices the school forms. Who manages Christmas. Who keeps the in-laws warm. Who, when something needs doing, ends up doing it.
Husbands who’ve coasted on the assumption that “she’s just better at this stuff” tend not to realise how much rage is sitting underneath. Affairs, in this context, become a small reclaiming. A space where she is not the manager of anything. Where someone else does the booking, the planning, the surprising. Where she just turns up and is wanted.
When women describe their first hotel afternoons as “the first time I’d been off-duty in six years,” that’s what they mean.
The fantasy isn’t always sexual
A reasonable proportion of our female members never go beyond messaging. Not because they’re nervous about being caught — though some are — but because the fantasy itself is what they’re after. The thrill of the inbox. The feeling of being pursued. The freshness of having something private of one’s own again, after a decade of being entirely transparent to a husband, a workplace, and a family WhatsApp group.
Some affairs are physical. Some are emotional. Some are basically a long, attentive, two-year correspondence with someone who lives in another city and occasionally sends something flirtatious at 11pm. Each of those is, for the woman in question, an affair. And each is meeting a different ache.
The mistake most husbands make, when piecing together a wife’s affair, is assuming the only thing that mattered was the bedroom. Often the bedroom was the smallest part.
They’ve stopped believing the marriage will improve
This is one of the harder reasons to admit, and it tends to come out later in conversations rather than first. Many of our female members had, at some point, given the marriage every reasonable chance to recover from a slump. They’d suggested counselling. They’d raised it gently. They’d raised it firmly. They’d waited. They’d lowered their expectations. They’d tried, for years, in some cases.
By the time they end up on a married dating site, they aren’t typically in the early stages of disappointment. They’re often well past the point of believing change is coming. The husband, often, has no idea this point has been reached. From his vantage point, things are “fine.” From hers, the fine has become unbearable.
An affair, in this scenario, is sometimes a stay of execution — the thing that allows her to remain in the marriage without despairing of it. That’s an uncomfortable truth, but it’s one we hear regularly.
They want to feel like a woman again, not a wife
There’s a phrase several of our female members have used almost word for word: “I wanted to feel like a woman again, not a wife.” They tend to say it slightly apologetically, as though the distinction is suspect. It isn’t.
Wifehood, for many women, has become synonymous with logistics, in-laws, and being patient about her husband’s hobbies. It isn’t a dirty word, but it isn’t a sensual one either. The female desire to be desired — properly, attentively, without being expected to do the legwork — doesn’t disappear just because someone has been married for fifteen years.
An affair is, often, the first place a married woman has been treated like a woman in years. Not as a co-parent. Not as a logistics manager. Just as someone fanciable, opinionated, funny, and worth pursuing. That feeling, once tasted, is hard to give up.
Frequently asked questions
Are women really as likely to have affairs as men?
The gap has narrowed considerably. Studies from the UK over the last decade suggest women’s infidelity rates have risen sharply — particularly amongst women in their forties and fifties. Our own membership reflects that: roughly 45% of IE members are women, and that proportion has grown each year.
Do affairs make women more likely to leave their marriage?
Statistically, no. Most married women who have affairs do not leave their husbands. Many describe the affair as something that allows them to stay — a release valve, rather than an exit door. Counter-intuitively, the same isn’t always true for men.
Is there a typical age when women start affairs?
There isn’t a single answer, but the most active age range amongst our female members is 38 to 55. Younger married women tend to come on to the site less often than older ones, and the busiest cluster is the mid forties — usually corresponding with empty nests, career plateaus, or a long-coming sense of recalibration.
Do women feel guilty about affairs?
Yes — often, though not always in ways outsiders predict. Many feel less guilt about the act itself and more about the inconsistency of it: presenting as one thing at home and another in private. Most learn to separate the two domains, but it isn’t always painless.
What kind of men do women on IE actually want to meet?
Less than most people think. Looks matter, but not dominantly. The two qualities that come up over and over: emotional attentiveness, and the ability to make her feel desired without being clumsy about it. Confident but not pushy. Warm but not needy. A sense of humour is welcomed. Considerably welcomed.
The honest summary
Why married women have affairs isn’t a question with a one-line answer. The cliché — “she wasn’t getting enough at home” — is so reductive it’s almost insulting. The actual answer is closer to this: she stopped feeling like a person to her husband, and at some point realised she’d stopped feeling like one to herself.
When she finds someone — or a few someones — who notice her again, who lean in when she speaks, who treat her like a woman rather than a co-manager of a household, something inside her unclenches. Sometimes for a few months. Sometimes for years. Occasionally, for the rest of her marriage.
If you’re a woman reading this and recognising bits of yourself, you’re not alone, and you’re not unusual. Most weeks, our inboxes are full of women working out exactly what you’re working out. Some never act on it. Some do, quietly, and find a version of themselves they thought they’d lost. Either is allowed.
You already know where we are.
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