Key Findings
· 26% of members with a child leaving home this year say the marriage ends once they go, an arrangement the site has dubbed the ‘empty-nest pact’.
· Of those, 58% say it was agreed more than five years ago, and 21% put it at more than a decade.
· Sign-ups from members aged 45 to 54 are forecast to rise 39% across September, against the August average.
· The results come from a poll of 1,600 members by IllicitEncounters.com, the UK’s leading extramarital dating site, and the site’s own registration forecasts.
The cars have been loading since the start of the month. By the beginning of October most of this year’s students will be living somewhere else, in a city their parents will from now on only visit. For a quarter of those parents, according to new research, that is also the week the marriage ends.
IllicitEncounters.com, the UK’s leading extramarital dating site, has started calling it the empty-nest pact: an agreement to stay together until the youngest has gone, sometimes said out loud and more often not.
The site polled 1,600 members who are parents. Of those with a child leaving home this year, 26% said the marriage would end once the child had gone.
Very few described it as a recent decision. Of the parents who reported such an arrangement, 58% said it had been agreed more than five years ago, and 21% put it at more than a decade. That is half the child’s life.
Asked what had kept them going in the meantime, 63% pointed to shared logistics rather than affection: the school run, the fixtures, the holidays that only really work with two adults in the house.
The finding lines up with separate research by Direct Line, which found that 22% of parents had stayed in a relationship longer than they wanted to for the sake of their children, and that those who did stayed an extra five and a half years on average. IE’s members date the pact at more than five years old.
Mothers were more likely than fathers to say it had been discussed out loud, at 34% against 19%. Fathers described something both of them understood and neither had said.
The site’s own figures point the same way. Sign-ups from members aged 45 to 54 are forecast to rise 39% across September, against the August average. The sharpest days are Sundays, once the parents have driven home.
Helen*, 49, from Sheffield, joined in the week after she drove her daughter to Leeds. “We’d said it out loud once, about eight years ago, and then we never mentioned it again,” she says. “It wasn’t a row. We both just knew. I’d driven back on my own, made a cup of tea, and that was that.”
Jessica Leoni, sex and relationships expert for IllicitEncounters.com, said: “We can almost set our watch by this one. It’s every September, without fail, and parents join to tell us they’ve been counting down since the child was in Year 9. There’s no crisis and no big row. They’ve just reached the end of an agreement they made a very long time ago.”
She added: “I’ve had this conversation with more parents than I could count, and what still surprises me is how calm they are about it. Nobody’s shouted. Nobody’s stormed out. They’ve packed the car, put the shelves up in halls, driven home and then sat down to work out who’s moving where. If you want to know how long a marriage has really been over, ask when the youngest started secondary school.”
Results
What has kept the marriage going until now (of those with an empty-nest pact; respondents could select more than one)
| Reason given | % of those with an empty-nest pact |
| Shared logistics: school run, fixtures, holidays | 63% |
| Not wanting to disrupt exams | 54% |
| The cost of running two households | 47% |
| Keeping the family home until they leave | 41% |
| What extended family would say | 28% |
| Still being friends | 24% |
| Hoping it would improve on its own | 19% |
*Name has been changed.
About Illicit Encounters
IllicitEncounters.com is the UK’s largest and longest-running extramarital dating site, established in 2004. The site has over one million UK members and publishes regular research on modern infidelity and relationships in Britain, with expert commentary from sex and relationships expert Jessica Leoni.
Press contact: [email protected]





