Texas Mom (Harlequin American Romance)

FOR THEIR SON 

Texas veterinarian Delaney Blair will do anything to find a bone marrow donor for her four-year-old son, Nickolas. The only likely match is his Argentinean father, Dario. But Dario and Delaney didn't part on good terms. In fact, he doesn't even know he has a son! 

Delaney travels to Argentina to find him, and Dario, shocked, returns to Texas. It's not long before Nick and Dario become close. Not only that, Dario can't hide the feelings he has for Delaney—feelings that have been there since they met. Dario's family doesn't want him to be with her. But now they have to see if the love between them is strong enough to keep them together.