放不下当初有过你的心放不下曾经爱过你的心
[fàng bù xià dāng chū yŏu guò nĭ de xīn fàng bù xià céng jīng ài guò nĭ de xīn]
'Cannot Forget My Heart That Once Had You And Loved You So Deeply', indicates there is something precious from the past, especially deep love for some specific person, but now it's hard to forget or let go. It may suggest lingering affection or nostalgia for a lost relationship.