Confused Love Mystery

Some people say that whoever falls in love first loses. Gu Bei didn't believe it, but it took five years of love for her to see the truth clearly. She lost and was completely defeated. The person who is favored is confident! As a favored Qiao Nan, I don't understand how she could just throw him away five years later. Five years later, Qiao Nan realized that Gu Bei had always been in his heart, but Gu Bei no longer loved him!