Just One Moment by Poppy J. Anderson

Seen from the outside, Barbara has a perfect life. She has two small sons she adores, and she’s a popular part of Connecticut high society. But up close, her life is anything but perfect.
Deep down, Barbara is heartbroken over the failure of her marriage. Two years ago, she divorced her husband James. Though she still suffers with the separation, she simply can’t forgive him. The wounds he caused run too deep for that.

James suffers, too. He’s loved Barbara ever since they met her first week at college. As Barbara goes on with her life after their divorce and begins seeing another man, James starts to think about making a fresh start, too.
But what happens when those things hushed up for far too long are finally brought to the table? Is it possible to forgive a person’s mistakes and give love a second chance?