Tara Taylor Quinn 
Their Secret Twins [EPUB ebook] 

He showed up on her doorstep with a surprise…The lure of big-city finance drew Jordon Lawrence away from Shelter Valley-and broke the heart of his fiancee, Mia Jones. But the once picture-perfect couple donated embryos while they were together, and they live on…in the form of orphaned four-year-old twins! When Jordon is asked to be their guardian, he turns to Mia. Her dream of motherhood is within her grasp…if they can heal from past wounds!