But Helen Fielding's own research suggests women should try being "horrible" to become lucky in love.
Fielding revealed she set up fake profiles on dating websites at an event in Los Angeles where she was speaking about her latest book, Mad About The Boy, according to reports.
She created an account featuring a photograph of a woman in a sensible jumper who loved to read and cook, and another for 'SuperLuckyBitch' who had a sexy photograph. She said: "So I had SuperLuckyBitch who was glamorous but really horrible and it said on her profile, 'You'd be lucky to get a date with me', and the other woman was really nice and sweet.
"Well, I bet you can guess who was the most popular."