Wiktionary
genie is out of the bottle
phr. 1 (context idiomatic English) Information has been released that will have ongoing consequences. 2 (context idiomatic English) Something has been brought into reality that cannot be eliminated or undone.
Usage examples of "genie is out of the bottle".
With our sex laden culture and media, the genie is out of the bottle.
Once the genie is out of the bottle (so to speak), it's hard to put it back.