(view spoiler)[Ian Eversea has a naughty romp with Lady Abigail, the Duke of Falconbridge's future bride. He swears revenge and sets out to seduce Genevieve, Ian's sister. Genevieve is distraught her childhood friend, is about to propose to Millicent, so the "light" has gone out from her, yet her quick lines and wry intelligence makes her figure out Alex's (the Duke) scheme midway through the book. He drops the game and pursues her for real. All the while Harry Osborne (Best friend of Gen), is actually being a coward and wanted to force a reaction from his Gen with the Millicent thing. Too bad for him, she fell in love with Alex first. (hide spoiler)] 
 Excuse me summarizing the story, it's meant for my eyes only :P 
 I read this months ago, and thought I was picking up a new book today, because I'd forgotten all about it! But as I read, I remembered, and remember nothing from my first read, except (view spoiler)["Harry was faking it with Millicent" (hide spoiler)] and back then thinking what a fucker he was. 
 Solid, well written historical romance, pretty good actually, but I'm only docking a star because it clearly didn't stick to my memory when I first read it^^ Despite it have a bevvy of good characters and scenes, that I had a "premonition" of before it happened. So clearly my subconscious remembers it even if I didn't ;P