竹马出轨独留青梅浊酒

This nickname plays on a traditional Chinese saying. 'Zhuma' (boyhood friend) and 'qingmei' (girlhood friend) refer to two people who grow up together since childhood. Here, the nickname implies that even though the close boyhood friend has left, the deep friendship remains, symbolized by drinking aged wine which evokes nostalgia for old memories and relationships.