Is there a ことわざ similar to "water under the bridge" and "let bygones be bygones"?


Earlier today in a comment I tried to explain to a community member that they
should put whatever happened in the past behind them. I used "water behind the
bridge" and "let bygones be bygones". For context, the two English idioms are:

[water under the bridge](https://www.merriam-
webster.com/dictionary/water%20under%20the%20bridge)

> —used to say that something happened in the past and is no longer important
> or worth arguing about  
>  _We had our differences in the past, but that's all water under the bridge
> now._

[let bygones be bygones](https://www.merriam-
webster.com/dictionary/let%20bygones%20be%20bygones)

> to forgive someone for something done or for a disagreement and to forget
> about it  
>  _I know we've had our fights over the years, but I think it's time we let
> bygones be bygones._

I've found [some explanations of the two phrases in Japanese](https://native-
phrase-blog.com/its-water-under-the-
bridge-%EF%BC%9A%E3%81%9D%E3%82%8C%E3%81%AF%E3%82%82%E3%81%86%E9%81%8E%E3%81%8E%E3%81%9F%E3%81%93%E3%81%A8%E3%81%A0%E3%82%88/)
but have yet to find a corresponding ことわざ.




Oddly enough we say 水に流す。E.g.昔のことは水に流して仲良くやろう。




Oddly enough we say 水に流す。E.g.昔のことは水に流して仲良くやろう。

