She writes after sending a text message: "You see, this is the trouble with the modern world. If it was the days of letter-writing, I would never even have started to find his address, a pen, a piece of paper, an envelope, a stamp and gone outside at 11.30pm to find a postbox.
"A text is gone at the brush of a fingertip, like a nuclear bomb or Exocet missile. Dating Rule No 1: Do not text when drunk."
A statement from publishers Jonathan Cape said: "Bridget is older, she is still keeping a diary, but she is also immersed in texting and experimenting with social media, with an emphasis on 'social'!"
Jonathan Cape publishing director Dan Franklin said: "As a comic writer, Helen is without equal. Over 15 years ago she gave a voice to a generation of young women with the original Bridget book.
"Now they've grown up and she's doing it again... this time with all the joys and complications of social media."
Jones, who filled the pages of her diary with her failed efforts to find love and measured her life in the amount of cigarettes she smoked, units of alcohol she drank and number of calories she consumed, started life as a weekly column in British newspaper The Independent in 1995.
Best-selling English author Fielding recently wrote that the dating scene had become even more difficult for women thanks to the advent of email, Twitter, Facebook and texting.
Writing in the margins of her novel Bridget Jones' Diary for a charity book sale, she said that she thought that finding a partner is "so much worse now".
Oscar-winning actor Firth recently dashed hopes that a third Bridget Jones film would be hitting the big-screen soon.
"Unfortunately, it might be a bit of a long wait. I wouldn't say that it's completely dead in the water, but the way it's going you might be seeing Bridget Jones' granddaughter's story being told by the time we get there," he quipped.
- AAP