The Art of Ruining a Rake — Emma Locke

THE NIGHT THAT STARTED IT ALL
Practiced rake Roman Alexander, Lord Montborne, never meant to seduce his best friend's sister. He certainly never intends to do it again. The reckless scoundrel has never felt more compelled to be a better man. Nevertheless, he can't seem to forget her, or her passionate response to his kisses. How much danger can there be in one more try? 
 
THE DAY THAT RUINED EVERYTHING 
Serious-minded headmistress Miss Lucy Lancester believes her handsome rogue has moved on to his next conquest, leaving her free to cherish their one night together for the rest of her bluestocking days. Until the afternoon he arrives at her school intent on proving their one night wasn't enough -- and this time, the scandal can't be contained. Left with few options and no reputation, Lucy turns to the one man she's sworn never to be alone with again. How dangerous can it be to spend her nights in the company of a rake?