心就一颗我怎么敢乱送
[xīn jiù yī kē wŏ zĕn me găn luàn sòng]
The individual emphasizes that since everyone only possesses one heart, implying their genuine emotions and feelings, they cannot easily entrust their whole self, their heart, with someone who might break or misuse it; showing a cautious stance toward intimacy and deep commitment.