怪我情深怨我缘浅
[guài wŏ qíng shēn yuàn wŏ yuán qiăn]
It expresses self-accusation - blaming oneself's deep love but complaining about the shallow fate or relationship with another person. This implies that although the user loves deeply, they regret their relationship with a particular person, believing their own affection was misplaced, excessive, or unreciprocated.