forgive and forget
US /fərˈɡɪv ænd fərˈɡɛt/
UK /fərˈɡɪv ænd fərˈɡɛt/

1.
既往不咎, 不念舊惡
to stop feeling angry with someone for something they have done and to not remember it or allow it to affect future relationships
:
•
It's time to forgive and forget what happened between us.
是時候既往不咎了,忘記我們之間發生的事情吧。
•
After their big argument, they decided to forgive and forget.
大吵一架後,他們決定既往不咎。