water under the bridge

US /ˈwɔtər ˈʌndər ðə brɪdʒ/
UK /ˈwɔtər ˈʌndər ðə brɪdʒ/
"water under the bridge" picture
1.

agua pasada, cosa del pasado

past events or issues that are no longer important or relevant, and should be forgotten

:
Their old argument is just water under the bridge now; they've moved on.
Su antigua discusión es solo agua pasada ahora; han seguido adelante.
I know we had some disagreements, but that's all water under the bridge.
Sé que tuvimos algunos desacuerdos, pero todo eso es agua pasada.