It's no good crying over spilt milk

It's no good/use crying over spilt milk.

  also There's no point crying over spilt milk.
something that you say which means you should not get upset about something bad that has happened that you cannot change Sometimes I regret not taking that job in London. Oh well, there's no point crying over spilt milk.
See also: crying, good, milk, spilt
References in periodicals archive ?
But it's done and it's no good crying over spilt milk, though I think Gemma should be entirely honest and tell her girlfriends what a terrible let down her first adventure was.