Back for Seconds by Sadie King

Dina:
I was always getting in trouble when I was younger. I ended up with a few misdemeanors from doing stupid things for kicks to ease the small-town boredom.
When I started dating a local cop, I liked shocking him with my uninhibited behavior. I never dreamed I’d fall in love with him.
When I found out I was pregnant, I ran.
But having a baby on your own is hard, and I had to come home to my brother for help.
If Brandon knew he had a son, he’d want to play happy families. But I can’t do that to him. All he’s ever wanted was to be sheriff of Maple Springs, and he can’t do that with a woman like me.

Brandon:
I thought I’d met the love of my life, the woman I wanted to make mine forever. But I woke up one morning and she was gone.
I spent the last ten months looking for her, and suddenly she turns up back in town. But she’s not alone. There’s a squalling baby in her arms that she claims isn’t mine.
But I’m not stupid. Now I want her and my son.
But how do you tame a wild child who’s likely to run again?