On which page does the secret love of confession appear?

Chapter 247. Chapter 247 mainly tells the story that the protagonist Xiao Liuer feels lost and helpless because of some things, so she decides to ask her teacher Zhang for help. In the conversation, Teacher Zhang mentioned a word "unrequited love", saying that this word can be used to describe the feeling of the old six. However, this word has not been explained or defined in detail. Confessions is an online novel with a special liking, serialized in Jinjiang Literature City and written by Chen Ying.