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The heroine made a boyfriend, Li Yao, in high school, and the two helped each other to save each other. After going to college, she met her best friend's brother Li Heng through her relationship. The heroine fell in love with him after just one look at the photo. The female protagonist actively requested to add the male protagonist Li Yao's contact information, but encountered various obstacles. He often appeared and disappeared, and the way he greeted him when he appeared was also very unusual. The heroine accidentally falls in love with a senior from the same university. At the same time, the heroine discovers something unusual about her male best friend. The male best friend proves the heroine's guess with her actions. After becoming ordinary friends with Li Yao, he told the heroine about a secret love he had always hidden in his heart. Li Yao graduated from university and was assigned to the city where the heroine was. After the two met, he began to pursue the heroine.