放弃过去的你只在乎曾经
[fàng qì guò qù de nĭ zhĭ zài hū céng jīng]
'Abandon the you of the past who only cared about once-upon-a-time.' This suggests an attempt at letting go of old emotions attached to someone from the past. It shows that while they have chosen to leave that person's past behind, those past memories still weigh heavily on them.