For Zhou Zhou, she could be considered a winner in this life, but she thought that if she had it to do over again, she would not be so naive as to think that love is everything.
For Qi Ling, the only person he was sorry for in his life was Yan Xi. He might have regretted it, but at the beginning everyone thought that no matter how good he was to Yan Xi, he should do it, because everything he had was given to him by the other party, and he was a man. Maybe he loved Zhou Zhou, and he still does to this day, but there were some things where we couldn't always say who was right and who was wrong.