闺蜜变情敌
[guī mì biàn qíng dí]
The name 'Best Friend Turned into Rival' suggests a situation in which the relationship between two people changes from close friends (typically having very deep trust and sharing a lot) to a state of opposition or conflict. This often arises in situations of romance where the friend falls in love with one's lover or vice versa, thereby creating conflicting emotions such as jealousy, anger and pain.