Lord of Scoundrels by Loretta Chase
Jessica Trent’s main aim is to free her stupid brother from the destructive path that he took under the influence of Sebastian Ballister, the notorious Marquess of Dain. With her mind on her mission, she never expects to desire or fall for the arrogant, amoral cad, but when Dain’s reciprocal passion places them in a complicated public position, Jessica has no choice, but to seek satisfaction.
Jessica’s seductive acts might be paying off, forcing him to salvage her reputation. Lord Dain is ready to put her in the most amorous position ever and if it must be marriage, it must be.