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.
So I paid £119 for a month's membership, giving me an entre to thousands of faithless females.
They are allowed to sign up for free as a way of ensuring the numbers are balanced between the sexes.
What I don't know is how her husband will feel about it. Aside from the little matter of her marital status, she also believes I have a wife, but she doesn't care.
She wants instant gratification even though we've exchanged only a few words online.
Later on I'm perplexed when she sends me two flirty text messages.In order to fit in with the general ethos of the website I have invented a wife.Our relationship, I note, has suffered because we don't spend enough time together (not surprising really, since she doesn't exist).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.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.