In extracts from her new book, Mad About The Boy, published in the Sunday Times magazine, Bridget reveals that Darcy - her husband and father to her two children, died five years earlier.
Darcy was played by Colin Firth in the Bridget Jones movies.
Chloe Helen Lemmon wrote on Twitter: "One word for Helen Fielding: why?!"
Becky Milborrow asked: "What the hell is helen fielding playing at in the next bridget jones book!?