负我者不得好死甩我者死于非命
[fù wŏ zhĕ bù dé hăo sĭ shuăi wŏ zhĕ sĭ yú fēi mìng]
Translates to 'those who wrong me shall have a bad end; those who dump me will die unnaturally', expressing deep resentment towards others' betrayal, carrying very negative emotions which may seem overly dramatic or threatening.