You must allow me to tell you how ardently I admire and love you,"—Jane Austen wrote in her novel Pride and Prejudice. "To love at all is to be vulnerable."—C.S. Lewis in his book The Four Loves.

I Love You, You Hate Me, the two-part documentary series premiering on Peacock on Wednesday, explores the way Barney became a runaway hit with tots, and how the tubby T-Rex ignited one of the most ...