我的心很小只能容你一个
[wŏ de xīn hĕn xiăo zhĭ néng róng nĭ yī gè]
Expresses an intimate exclusivity within their heart through 'My Heart Is So Small That Only You Can Fit In It.' Emphasizing the purity and singularity of love, stating that room exists only for a single loved one; it’s a declaration of undivided affection and commitment, wanting the other person to feel as though they are truly special above all.