深情换来背叛薄情总是难忘
[shēn qíng huàn lái bèi pàn bó qíng zŏng shì nán wàng]
Means 'Sincere love ends up betrayed and it's hard to forget those shallow-hearted persons'. Deep feelings have met a treacherous end, indicating someone has had deep wounds in their romantic experiences or friendship that still pain.