只怪承诺太动听
[zhĭ guài chéng nuò tài dòng tīng]
Indicates remorse caused by broken promises made in the past that felt so genuine and heartfelt at the time but ended up being unfulfilled due to circumstances beyond control. Herein lies disappointment not just towards others who failed their word but also oneself for trusting too easily without considering future uncertainties beforehand.