当初答应久留不走分手之后再无你影
[dāng chū dá yīng jiŭ liú bù zŏu fēn shŏu zhī hòu zài wú nĭ yĭng]
Loosely translated as 'Promised to stay long at first, but after breaking up, there's no sign of you.' It talks about regretful broken promises within failed romantic relationships, showing longingness after loss.