因为你我的心没有了空位
[yīn wéi nĭ wŏ de xīn méi yŏu le kōng wèi]
The phrase means 'Because there is no room left in our hearts', referring to being filled with certain feelings or experiences which have crowded out everything else. This may symbolize a full heart, but also a situation when one's heart doesn't want new relationships or changes.