Review Detail of Pacesetter in A Second Chance At Love

Just as the name signifies. The female lead lived the male lead totally and gave her everything to the relationship. But the male lead misunderstood her and didn't reciprocate until the female lead got fed up and left the relationship. Then he is able to realise the truth and is filled with a guilt that can't be undone , forgiven or even have a chance to apologise. Will there be second chances?