Searching - Pregnant woman posts pictures and cheats

[frotz]

Hi

Searching for a story I read before - perhaps not on this site.
It's about a pregnant woman who joins some pregancy bulletin boards. She realizes that one of them is somewhat exhibitionist, but starts posting pictures of herself anyway. She starts chatting with a younger guy, and develops an online relationship over time. Eventually she cheats on her husband with this guy.

Thanks for any pointers, or links to similar stories.