Suddenly the realisation of how odd it is to meet a stranger with the express intention of having an affair dawns on me. It's more like Alan Sugar interviewing an apprentice.But she is an old hand at this type of encounter and tells me she's met many men through the site, and that I was probably the only one who hadn't lied about my age.She seems rather on edge and sends me a text message at the time we're due to meet asking why I'm using the website.
But it claims to have more than 100,000 members in the UK.
Many of them are middle-class, many have young children.
I'm already starting to feel like I've had enough of this experiment.
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.
"My preference is for a man who is much younger than me with rugged features," says one. This is a way of paying someone a compliment without typing out the words. And over the course of a week I get almost 100 replies, messages and propositions.
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.
She has declined to tell me her name, so I have to think of her as her web sobriquet.
This is how I find myself waiting for "Sophia Loren".
Despite this, she still seems keen to flirt with me.