The Rake Desires The Diamond by Nicki Pascarella

Lady Katrina Harrington considers herself the luckiest woman in England until a masked rake seduces her, destroying her perfect life. Evan Eaton lives a carefree existence until the diamond of the season kisses him, setting his world spinning. Now, the childhood enemies must fight their scorching chemistry and work together to defeat the odious blackmailer who witnessed their untoward liaison.