Was the protagonist of this novel a childhood sweetheart?

The male and female leads met on Christmas, and the male lead called the female lead a doll. The female protagonist liked the male protagonist's brother. The female protagonist went to a girls 'school, and the male protagonist went to a boys' school opposite the girls 'school for the female protagonist.
The male and female leads were enemies. One of them seemed to have the surname Song.

Answer 1

I recommend "The childhood sweetheart is about to go crazy: My childhood sweetheart is so embarrassed that she runs away!" This novel is for you. The male and female leads were childhood sweethearts. When they met again ten years later, he became arrogant and domineering in order to pursue the female lead. However, he never forgot the promise he made back then. The two of them finally got together in their pursuit of each other. I hope you like this fairy's recommendation. Muah ~😗