What Did You Do to Accept Your Mentor from My Ex-Boyfriend?

Lono once heard someone share the four major tragedies in life, and he felt deeply convinced that these four major tragedies are: When you see a doctor, you meet your ex as the attending physician; when you take an exam, you meet your ex as the examiner; when you have a meal, you meet your ex as the chef; when you have a funeral, you meet your ex as the host. And now she feels that she should add one more thing: When I was in graduate school, I met my former mentor. Yes, on the first day of graduate school, Lono sadly discovered that her graduate tutor had changed, and it turned out to be her ex-boyfriend from high school. She never thought that she would meet him on such an occasion. He was a star among the stars, and she was a disgraced clown. This was simply the gloomiest moment in her life! -- Five years ago, Lono announced their breakup for some very unreasonable reasons and ignored his hundreds of phone calls and countless messages. Now, he was back, standing in front of her, successful and shining. He felt deep resentment towards her. Oh, this man is so stingy! Lono felt that his graduate career would be clouded and dark.