It may sound like an unpleasant niche website for a handful of amoral people to whom wedding vows never meant very much.

usa n granny date site-3

Your picture can be viewed only if you give a password to the person with whom you are conversing.

The idea is presumably to safeguard people from searching for their own spouses on the site - though how a husband would explain to his errant wife how he came to stumble across her picture on a website for adulterers, I don't know.

In the end, we agree to part and she wishes me luck and assures me I'll find the perfect paramour. This was like having a meeting with a new accountant with a helping of self-disgust thrown in.

Later on I'm perplexed when she sends me two flirty text messages.

I feel sorry for her husband, presumably unaware that the mother of his children is pursuing cheap thrills with strangers.

By now, I have been contacted by scores of women, so I arrange dates with the ones who are prepared to meet me in the next few days. Blonde, slim and relaxed, she has already told me by email that she's been married for ten years, has young children, time on her hands and wants to add a frisson of excitement to her life.

But in the modern world, in which the internet has become a vehicle for all manner of impropriety, she regards this kind of behaviour as perfectly acceptable.

We have encountered one another via an internet dating service established for the sole purpose of enabling married people to commit adultery.

But if I'm going to find out what really makes these women tick, I need to leave the safety of the virtual world and see them for myself. I arrange to meet a 41-year-old mother of two who misses "romance and flirting", in a cafe in two days' time.

She has declined to tell me her name, so I have to think of her as her web sobriquet.

I register, and enter the murky world of two-timing technology, taking note of the warning on the site: "Not all affairs have a positive effect on a marriage." What a masterpiece of understatement.