There’s a particular moment, sometimes weeks before someone signs up to a site like ours, when they quietly decide what they want. Usually it sounds like a clear pitch to themselves. Nothing serious. Nothing messy. A bit of attention, a bit of fun, then back to normal life by Sunday evening.
Sound familiar? Most married daters arrive with something close to that brief in their head. And then, somewhere around three months in, they look up and find themselves living a slightly different story.
After 20 years of running the UK’s largest married dating site, at Illicit Encounters we’ve watched this drift happen so often it’s almost predictable. The fling and the affair sit at opposite ends of the same spectrum — and people rarely end up at the end they planned for.
The fling they think they want
When most people sign up, they describe what they want in fairly clipped terms. A no-strings meet. A bit of flirtation. A confidence boost. Something contained.
It’s an understandable instinct. If you’ve been married 15 years and you’re sitting on a slow-burn loneliness you don’t quite know how to name, the idea of a tidy, time-limited fling feels like the lowest-risk option. You’re not leaving anyone. You’re not falling in love. You’re just topping yourself up, like having a glass of wine with a friend.
David from Surrey put it to us almost word for word: “I wanted something I could control. An evening here and there. No emotions. I’d had quite enough of those at home.”
The affair they didn’t quite plan
What actually happens, far more often than not, is something messier. The tidy fling tends to survive roughly two or three real meetings before it starts shifting shape.
Texts that began with logistics drift into actual conversation. You find yourself telling them about the bad day at work before you’ve told your spouse. You start looking forward to Wednesdays, because Wednesdays are when they’re free. And one Sunday afternoon you realise you’ve been thinking about them for an hour straight whilst sorting laundry.
That’s not a fling anymore. That’s the early stages of an affair. And almost nobody sees the line they crossed at the time. They just notice, in retrospect, that something quietly changed.
Why the slide happens
The instinct is to call this a failure of self-control. It rarely is. What’s actually going on is far simpler and, honestly, far more human.
Most married people don’t sign up because they’re under-sexed. They sign up because they’re under-noticed. They want to be asked about their day. They want someone to laugh at the dry, particular joke their partner used to laugh at and now politely ignores. They want to feel like a person again, not a piece of household furniture.
A fling can’t really satisfy that. A few hours of attention from a stranger doesn’t fill a 12-year emotional gap. So people keep going back to the same person — because someone who paid attention once might pay attention again. And before they’ve quite acknowledged it, they’re in something that looks a lot like a relationship.

What most affairs actually look like
Despite the tabloid version of married dating — all rooftop hotels and stolen weekends in Paris — the average affair on a site like ours is far quieter than people expect.
It’s a coffee on a Thursday before pickup. It’s a long text exchange after the kids are in bed. It’s two people, both married, both decent, both surprised at how much they have to say to each other after years of not being properly heard at home. Sometimes there’s a hotel involved. Often there isn’t, at least not at first.
Hannah from Manchester told us she didn’t sleep with the man she’d been seeing for almost four months. “We sat in his car outside a Premier Inn once,” she said. “We didn’t go in. We just talked for two hours about everything that was wrong at home. I went back to my husband that night and didn’t even feel guilty. I felt lighter. Like I’d remembered something about myself.”
The people in these affairs are not the cartoon cheaters of the popular imagination. They’re often the most thoughtful people in their own lives — the ones who’ve held everything together for everyone else, sometimes for decades, and have quietly run out of road.
The honest middle ground
So which do most married daters end up with? Neither, really. Most end up with something in between — warmer than a fling, less consuming than a full-blown affair. A connection. Something that gives them back a piece of themselves without blowing up their actual life.
That’s the bit nobody puts in their sign-up brief, because it sounds slightly mortifying to say out loud. But it’s what people are usually looking for, whether they realise it on day one or somewhere around month three.


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