Prince of Montéz, Pregnant Mistress

It's the night of a most glamorous art auction in London, and Cally Greenway is due to land the restoration commission of her dreams…. Until the paintings sell to an unknown bidder and, devastated and dashed, Cally uncharacteristically finds solace in the arms of a handsome yet ruthless stranger.
He's the very same man who bought her precious paintings—the Prince of Montéz! Leon summons Cally by royal decree—His Majesty wants a mistress: biddable, pleasurable…and pregnant?