男人不坏注定被挨女人不拽注定被甩
[nán rén bù huài zhù dìng bèi āi nǚ rén bù zhuài zhù dìng bèi shuăi]
Men who aren't a little bad will end up suffering while women who aren't a bit coquettish are doomed to being left. Here it implies traditional beliefs about dating behavior and expectations on social performance in romantic relationship: sometimes rebellious or unreserved attitudes attract more attention and maintain better relationships.