Regret (Never Waste a Second Chance) by Janice M. Whiteaker

Thirty years ago Nancy had to make a choice. She chose wrong. Now, with her life feeling more than a little empty, all she can think about is that one wrong decision and how things could have been different. And not just for her. Paul's never gotten past the one night Nancy Richards was almost his. It's colored every relationship he's tried to have and every choice he's made. Now she's been thrust back into his life by association and circumstance. And he still can't bring himself to try to make her his. Will the man Nancy hurt all those years ago find the strength to put his heart back on the line for her, or is she destined to spend the rest of her life wishing for what should have been?