姑娘不滥情就会被你甩
[gū niáng bù làn qíng jiù huì bèi nĭ shuăi]
Translated as 'If the Girl Is Not Indiscriminate with Love, She’ll Be Dumped by You', it indicates a girl would avoid excessive romance but still get abandoned. This somewhat conveys disappointment in love relationships where despite not throwing oneself into love lightly or excessively, it's still ended up getting hurt by someone else's departure.