"I want a man with a personality and looks to take my breath away." These are the requirements of the dark-haired, dark-eyed, 37-year-old Asian beauty who has sent me her romantic wish list.Reading it on my laptop in the aptly named Cafe Affaire in central London, I consider what she really wants: a no-strings-attached sexual relationship.

Many of them are middle-class, many have young children.

And all of them are looking for an opportunity to betray their spouses. But I wanted to find out what sort of woman uses such a site.

Postings such as: "I want a man who can look after me and knows how to treat a woman. I'm surprised and unsettled by the forward tone of some of the material. Determined to avoid the connotations, I reply: "The Beatles." I never hear from her again.

One woman sends me a message heavily laden with sexual innuendo and I come to regard her as the mistress of the single entendre. Another woman's first contact with me included a plan for a day out together, including visits to art galleries, a stroll round a park and then "a few hours under the duvet". I'm later propositioned by someone who tells me she has an hourglass figure.

Reading between the lines, I suspect she wants to meet again.

Sadly, I feel I have got all I want out of our brief relationship - two cups of coffee and a short conversation - and it's time to move on and find someone new.

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.

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