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In fact, she's 51 and the educated, successful director of a blue-chip company - with a 21-year-old daughter.
Her story is an illustration in microcosm of why sexually transmitted diseases among the over-45s are on the increase.
There was no suggestion of seeing one another again.
'I thought I was fine with what had happened, but a few days later all I could think about was that I'd slept with someone other than my husband.
We look better - and feel younger - than ever before.
Whether it's with the help of a nip and tuck or Botox, or less drastically a sensible diet and exercise regime, we can still turn heads after 50.
For me, in my 50s, the idea of taking my clothes off in front of a man who wasn't my husband was absolutely terrifying.
'For a year,' she says, 'I fooled around, sleeping with more than ten men.
And if the menopause proves tricky to navigate, there's always HRT to help us through.
The Noughties was the decade in which women, for the first time, could say I'm Fifty And Fabulous or Sixty And Sensational and it was a genuine feeling, rather than just empty words.
Greater economic independence and the fact that 50 no longer spells the end of the road for women are just two of the reasons for the ever- spirallingdivorce rate among older couples.
For better or for worse, we are the first generation of women to turn traditional ideas of middle age on their head.
Although the idea of a passionate affair filled my fantasies, my sexual confidence was at rock bottom. After a few disastrous dates with men who were introduced by friends, I met a man I liked. After the massive build-up of nerves and anticipation, I was surprised at how simple and natural it all was - I had forgotten that sex is about how we connect, not whether we have perfect bodies.