His Pregnant Princess: Harlequin comics

Lucia has been infatuated with her cousin, Luka, the Prince of Dacia, for years. But Luka is married to Alexa, and Lucia is left to pine after a man she can't have. Then she meets Hunter Radcliffe, a commoner who has worked hard to build his business and fortune. To escape the oppressive lifestyle of being a royal, Lucia travels with Hunter to New Zealand...and finds herself falling in love. When she discovers she is pregnant with Hunter's child, she is torn between what appears to be a union of convenience and her own yearning for a marriage with love.