From Longman Dictionary of Contemporary EnglishI never knew (that)I never knew (that)spokenNOT KNOW used to mean that you did not know something until now I never knew you played the guitar! → never
Examples from the Corpus
I never knew (that)• But I never knew from one week to the next if there would be any money.• And I never knew he took my advice about Eliot so seriously.• Those men have to stand that over and over again. I never knew it was like that.• I sort of dabble my foot in it like it's a puddle. I never knew Marie was married.• I was brought up in a pit village near Bishop Auckland and I never knew my father.• You and your father. I never knew two people more alike.• You said they stole your milk. I never knew what it was that messed him up.• As I once told you, I never knew where we were heading when I first drove out the Anacreonians.• I never knew you played the guitar! 