Reckless Abandon by Willa Kay

Griffin
I never put much stock in fate. That is, until I met Angelina Rossi. She barrelled past all of my defenses without even trying. Five years after I let her slip through my fingers, she showed up in my hometown to take over the local veterinary practice.
Now she’s back in my orbit, on the ranch that I love, and on the arm of my best friend. It’s agony—pure torture in the form of delectable curves and eyes that can bring a grown man to heel with a single glance.
When Tyler makes the biggest mistake of his life, I offer her a shoulder, but she takes my heart instead. Getting her to marry me is the easy part. Keeping her will be the greatest challenge of my life.

Angelina
I thought I had everything I ever wanted within my grasp—the house, the husband, the kids, and a career that I loved. When I do turns into I can’t do this, I become an unwitting jilted bride at thirty-seven years old, watching my future turn to dust with three sentences scrawled on hotel stationery.
Enter Griffin Hayes—the best man and, as it turns out, the better man.
After a few too many margaritas, one spontaneous wedding in a Las Vegas chapel, and a positive pregnancy test, he’s bound and determined to become my everything, including father to my baby—even if it isn’t his.