小时候的朋友长大是情敌
[xiăo shí hòu de péng yŏu zhăng dà shì qíng dí]
Translating into English, this net name is something along the lines of 'The Friend in Childhood Has Grown up to Be A Romantic Rival'. It reflects an intriguing scenario where childhood friendship has taken an unexpected twist as affection grew between people, ending in conflicting romantic interests.