Bringing it to life brought only complications, albeit occasionally exquisite ones.
After a couple of months I had to end it – and it was after I had made this decision that my husband found out.
When the time was right for both of us, we would work through our problems and come back to one another. I shed my regulars and concentrated on just one, a man younger than me by almost two decades.
And it was harmless, until I fell in too deep and wanted more than his messages.
It's taken me a good while to fully come to terms with what I've done, to understand how easily I fell into the previously unknown world that I would regrettably come to prefer to the real one.
Luckily, after only a short time apart, my husband came back to me, willing to try to put us back together and realising, in all this, he had had a part to play too.
Soon, I was spending hours in the parallel universe of cyberspace, often through wonderfully wide-awake nights, uninhibited in a way I never could be in reality.
I told no one, immersed and isolated in my secret life. In moments of fleeting clarity, I wanted to understand what was happening to me. Was it just my marriage problems, or was there something deeper causing me to behave that way?
I'm in my mid-40s now, and our relationship remains every bit as complicated today.I met all sorts of people, from all over the world, older and younger, and each seemingly as desperate for a true connection as I. Should I be blaming my mother, or my – mostly absent – father for feeling that something was eternally missing? I was born to a woman that didn't much want children, and who fell foul to postnatal depression a good couple of decades before the term was even coined.And for a while at least, it all felt harmless and innocent, and fun. My father leaving didn't help, and for the first six months of my life I was placed with a notional "auntie", a family friend who became my surrogate mother throughout my childhood.Mercifully, the kind and complicated man I was married to focused too.I'd always heard that you have to work at a marriage.A late arrival into the world of social media, I nevertheless embraced it as a kind of escape.