Crossword puzzle clue "don't know but i know i love you"

"Don't know ___, but I know I love you"

Goo Goo Dolls song that you probably know from the way John Rzeznik snarls "But you don't even know who I am"

"Love, love ___, you know I love you"

"Da Da Da I Don't Love You You Don't Love Me Aha Aha Aha" band

“You don’t know about me without you have read a book by the name of ‘The Adventures of Tom Sawyer,’ but that ain’t no matter”

"___ know it's more common to clue this as the 5th-century pope, but it seems easier this way; don't you agree, Mr. DiCaprio?"

"If You Don't Know Me By Know" band

They know things you don't think they know