凉薄少年亦冷心凉薄少女亦亡心
[liáng bó shăo nián yì lĕng xīn liáng bó shăo nǚ yì wáng xīn]
A cold-hearted boy meets another with no heart, portraying individuals lacking deep emotions meeting others similarly detached or emotionally unavailable, emphasizing their mutual lack of genuine warmth or feeling.