Duke, actually : a novel
(Book)

Series information from Goodreads.

Sequel to: A princess for Christmas.

Under pressure by his family to marry, a playboy baron becomes determined to befriend a no-nonsense-but-single professor he met at a wedding, for friendship and distraction.

MEET THE MAN OF HONOR; Maximillian von Hansburg, Baron of Laudon and heir of the Duke of Aquilla, is not having  a Merry Christmas. He's been dumped by a princess, he's unemployed, and his dominerring father has sent him to New York to meet a prospective bride he has no interest in. In the city, he meets Dani Martinez, a smart (gorgeous) professor he's determined to befriend before their best friends marry in the Eidovian wedding of the century. MEET THE BEST WOMAN; Newly single, no-nonsense New Yorker Dani is done with love--she's even written a list entitled "Things I Will Never Again Do for a Man" -which is why she hits it off with notorious rake Max. He's the perfect partner for snow angels in Central Park and deep conversations about the futility of love. It's all fun and games until their friendship deepens into attraction, but, oops...Falling in love was never part of the plan.