Expecting the Earl's Baby (Harlequin Romance Series #4468)

Claiming his heir! 

It was the most incredible night of her life, but Daisy Huntingdon-Cross never expected to see her Valentine fling again. Except six weeks later Daisy's world is turned upside down—she's pregnant! She just needs to tell the father… 

Yet the man she knew as "Seb" has a few revelations of his own. He's Sebastian Beresford, Earl of Holgate—he doesn't just work at Hawksley Castle, where they met, he owns it! And with Daisy's news, Seb's determined to claim his heir…starting with a wedding!