山盟海誓抵不过一句我爱你
[shān méng hăi shì dĭ bù guò yī jù wŏ ài nĭ]
'Promises on mountains and seas are worth not a single phrase of “I love you.”’ Reflecting the sentiment that sometimes simple expressions of love hold more value than big promises that aren’t fulfilled. There is often an emphasis here on sincere emotions rather than words said easily without meaning.