One of my favorite Heyers. No one writes better regencies than Georgette Heyer.

Deborah "Deb" Grantham makes a living running a gaming house with her aunt and her old friend (purely platonic) Lucius Kennet. Beautiful, charming, intelligent, and an expert gambler, Deb has many suitors for her hand, the most determined of which is young Adrian Mablethorpe. Though Adrian is wealthy and completely besotted with her, Deb is not interested in him in the least. He's immature, naive, and younger than she is. However, Adrian is convinced he will win her over. When his mother, Lady Mablethorpe, learns of Adrian's attentions, she is horrified, not only by his choice of bride, but also because she intends for him to marry his wealthy - and equally foolish - cousin Arabella. Lady Mablethorpe calls on her nephew, the formidable Max Ravenscar, to do something about the situation. Max assumes he can just throw some money at Deb and she will break things off with Adrian. However, Deb is deeply insulted by Max's offer and his attitude - and so a war of wills begins.

This is what a regency should be - funny, charming, enjoyable, and full of period detail. Max and Deb's little battle gets laugh out loud funny with just enough tension (supplied by Deb's unpleasant suitor, Lord Ormskirk)to keep things moving.