"You don't have to know." All these expressions may be used, in the order from more direct to softer nuance. - (넌) 몰라도 돼 / 알지 않아도 돼: You don't have to know (terse - might sound rude). - 알 필요 없어 [없을 것 같아]: You don't [wouldn't] need to know. - 모르는 게 나아 / 모르는 편이 나을 거야: You'll be better off not knowing. * 모르다 = 알지 못하다 = not know.

!. It's none of your business 2. You don't have to know that / you don't need to know that

Thank you :D that's very helpful ! Good luck to you :D

Hi Ghada, I'm not a native Korean speaker, but a fellow learner. This is what i would say: "너 알지 않아도 돼" "너 알지 않아도 된다" - 알다 - To Know (~지 않아도 되다 = Not necessary, not needed). The opposite = "You need to know" = "너 알아야 돼" "너 알아야 된다" (~아/어 야 되/하 다 = have to do, need to do, should do)