She always thought that she had no feelings for him anymore, and was preparing to slowly let him go with a new relationship, but later she found that she could not forget him at all, so she still chose him in the end.
He left her for some reasons. When he came back again, he found that she was no longer the same as before, and he was ready to pursue her again.
He always thought he liked her, but in the most critical moment, it was not her he saved. In the end, he recognized his own heart.
She was saved by him, but she thought he had recognized the wrong person. Later, she learned the truth and finally got her wish to be with him.