"Ten years ago, I became a stranger."

Aileen is the daughter of Earl West. Upon entering the Royal Academy, she becomes engaged to David, the son of Earl Stone, but just before graduation, she is broken up with because he says he doesn't love her. Ten years later, she reunites with David at a ball hosted by the king, but... A story about a pragmatic young noblewoman and a young nobleman who continues to believe he loves her forever. The "serves you right" element is minimal. Thank you for reporting the typos. I've made the corrections. I changed the genre. There isn't much romance, but since I can't create a combination of fantasy world + human drama, I was torn between literature + human drama, but I went with fantasy world (romance).