From the very first meeting, the guilt racked through me.
We would meet in hotels, have sex – mindblowing sex - and then the realisation that what I was doing was irrevocably wrong would set in.
I was fortunate enough to get another chance to do so, and I'm working at it now. Turned On By Lucy Dent (Doubleday, rrp £14.99) is available to order from Telegraph Books at £12.99 £1.35 p&p.
Call 08 or visit Telegraph Books The Big Short, the film adaptation of Michael Lewis' book of the same name about the causes of the financial crisis, opens in UK cinemas this weekend.
Some people can handle guilt well, and can happily juggle more than one life.
I failed – the guilt was profound – and so began the painful but necessary process of erasing one and focusing solely on the other, the one that had come first.
Mercifully, the kind and complicated man I was married to focused too.
And for 12 long, frequently torturous months we painstakingly made it liveable and lovable. I had a husband, a home, yet I was missing something, intangible but palpable. I still loved my husband, but I wanted adventure, excitement, a reminder I was still alive. I began chatting to men online in private chat forums, concealing any obvious indentifiers of who I was but talking about my life, problems and thoughts.And then it was finished: our nest, our empty nest. I became addicted to the attention and craved contact with the men I thought I had come to know. But I found out it wasn't as easy as I had first thought. I quit decisively at first, then slipped up, then quit again, craving some kind of patch.My husband worked hard at his job and, to alleviate its accompanying pressures, developed his obsession with horseracing, gambling and drinking. These conversations quickly developed into cyber-sex, each message becoming more adventurous and racy and allowing me to live out fantasies I would never contemplate doing in the real world. My husband and I became strangers, our lives by now distinct entities. I told myself that what I was doing was essentially harmless.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?
Taking my online affair offline was my big mistake, a transgression too far.