Good in Bed begins with the female lead discovering that her ex-boyfriend wrote a "tell-all" article about sex with her. Candace, our heroine, is a large woman, and her ex tells all about the trials of a man who is with a large woman in a national woman's magazine.
Candace's pain at that revelation mirrors the pain that anyone would feel at such a betrayal. Candace's betrayal has to do with her ex's discussions of her issues with her weight, more than the discussions of their relationship. Most larger women (all that I know) have issues with their weight, and those are more private, more personal than sex issues. When Candace's ex discusses this in a national magazine, it devastates Candace. (The ex uses "C" rather than her name, so only people who know her know it is her. So considerate of him, don't you think?)
How Candace survives, and even thrives, is the tale. But I made it sound too serious; it is hilarious. Candace attends a clinical study on weight loss, and leads a revolt. She makes new and interesting friends. And she has a man from Hollywood tell her that there are no overweight actresses in Hollywood. She's irreverent, and cynical, and sweet all at once. This was a wonderful book, with a heroine I'd like to know.