She is a passer-by on any street. Passing other people's love, friendship and family affection in the rushing crowd.
She is the all-purpose female supporting character in other people's stories. But in the final analysis, she just doesn't want to be the protagonist in her own story.
Years ago, she quit the three-person game and chose to exile herself. Years later, she passed them again because she no longer loved him.
There is no win or lose in love, and it will not pass the time. If there is a winner in love, then she is the one who loses in love but wins in herself.