'They probably did online dating when they were single, so that's where they'll immediately head to see what's out there,' says David Miller, who runs Loving Links, an online dating service and one-to-one introduction agency for 'nice, middle-class attached people'.
Since founding the business 15 years ago Miller has noted a huge increase in younger female clients.
'We have sex, we chat, we go back to our families,' Sheila tells me over a cappuccino.
'It used to be very much an empty-nest phenomenon for the over-fifties, but this week alone I've met five new women all under 40.
Women in their twenties and thirties belong to the "Because I'm Worth It" generation.
'Usually we just have a snog and a fumble but two have come back to my hotel room.
It sounds dangerous, talking about it like that, but I trust my instincts to know who's safe and who's a serial killer.
“I’m a young father and I want to spend time with my kids so they come everywhere with me, which we can afford to do at the moment before they start school," he said on This Morning. “Granted, the majority of people know me solely for that, but to me or any actor that is involved in any franchise, it is just another job and you move on to the next thing.” Dornan, who also starred in BBC drama The Fall, admitted that acting wasn’t always his career of choice and previously worked in a pub.
The 34-year-old said Dulcie (two) “loves” being a big sister to the newborn, whose name and sex have not yet been released, and “wakes up and wants to see the baby instantly.” The Fifty Shades of Grey actor has recently finished filming the second film in the novel-based series, Fifty Shades Darker, and admitted that he’s looking forward to taking a break from acting to spend time with his family.
I ended up stuffing all my new buys inside the legs of a manky old tracksuit.
I washed them by hand, locked in the bathroom, and dried them with a hairdryer as I didn't dare hang them up.' Tall, strong-featured and dressed in a cashmere sweater and wool trousers, Sheila is the kind of woman you see in the aisles of Waitrose, the front row of the school carol service.
It's about passion and spontaneity – having sex in the shower and up against a wall, all the things you see in movies that just never happen when you're arguing over whose turn it is to wipe the kids' bottoms.' The advent of email and mobiles have made affairs easier to run than ever before in practical, if not emotional, terms.
Yet suspicious husbands are also dab hands at checking their wives' inboxes.
All the women I spoke to were obsessive about covering their technical tracks.