After Breaking Off the Engagement, He Criticized His Ex-Fiancé Like Crazy

The Heroine Was Disheartened and Cut Off Her Love, and He Regretted It!

I want to read a book similar to "The strong-willed school girl is sour and astringent, she won't pursue her again after rebirth". When the female protagonist likes the male protagonist, the male protagonist treats her coldly and turns a blind eye. The heroine decided to let him go, and he realized how important she was.