"Having people give me feedback is a bit heady." Blogging, like infidelity, can become an addiction in itself – and for some, infidelity blogging can become something of a demanding mistress too. "There is no doubt that discovery would ruin my life in many ways," she reflects."But like some perverse drug I cannot seem to give it up." Bloggers do sometimes hang up their boots, of course.
She claims she's equivocal whether discovery would actually be a good thing – but she hesitates and I can't decide if the implication is that it might free her to keep blogging without subterfuge, or that being exposed might in itself be good blog material.
For many anonymous bloggers the risks of being found out are outweighed by the benefits that blogging brings, despite concern that discovery could hurt loved ones.
Marriages that have gone off the boil are also not a rarity – therapist Shirley P Glass states in her book Not Just Friends that one or both parties in 50 per cent of all couples will be unfaithful, and adultery remains the most common reason cited by divorcing couples.
What makes Shelly distinct is the fact that she is cheating on her husband and writes candidly about it online (at confessionsofawaywardwife.blogspot.com) under a pseudonym. Shelly's blog is one of a growing number of "infidelity blogs" which attract a loyal online following.
"Apart from the moments of intensity you share with your lover, you are unable to share the experience with anyone else in your life, including those closest to you." Tuesday's regular readers range from people having affairs to those whose partners have been unfaithful.