再美的誓言只是敷衍再多的情话只是瞬间
[zài mĕi de shì yán zhĭ shì fū yăn zài duō de qíng huà zhĭ shì shùn jiān]
A somewhat cynical view suggesting distrust in sweet nothings or big talk that isn't followed up with action. Even beautiful vows or many words of endearment don't matter much once the excitement fades away, leaving behind empty promises rather than solid evidence of true affection