Spring Fever by Mary Kay Andrews

 AnnaJune works with her ex-husband, Mason at his family-owned soft drink company in North Carolina. He is engaged to a woman named Celia and AnnaJune forces herself to attend their wedding to convince herself she's really over him and ready to move on. But then something interrupts the wedding and she wonders if this isn't Fate intervening. And if she and Mason might not have a future together after all.

Spring Fever is a good story. Mason and his brother are fighting over the future of the company. AnnaJune realizes Celia may have a master plan of her own. The people in this small town are worried about the future of the company, which is the town's biggest employer. And there are plenty of secrets from the past to be uncovered.