你的心里只有他我的心里只有你
[nĭ de xīn lĭ zhĭ yŏu tā wŏ de xīn lĭ zhĭ yŏu nĭ]
It literally translates into 'Your heart belongs only to him; mine only to you'. A situation of triangular love or complex emotional entanglement is implied here, suggesting deep, exclusive feelings for a certain someone but with a barrier to mutual acknowledgment due to an interfering factor.