What is this thing called love tony bennetwriter(s): cole porteri was a hum-drum personleading a life apartwhen love flew in through my window wideand quickened my hum-drum heartlove flew in thorugh my windowi was so happy thenbut after love had stayed a little whilelove flew out againwhat is this thing called love?this funny thing called love?just who can solve its mystery?why should it make a fool of me?i saw you there one wonderful dayyou took my heart and threw it awaythat's why i ask the lawd in heaven abovewhat is this thing called love?you gave me days of sunshineyou gave me nights of cheeryou made my life an enchanted dream'til somebody else came nearsomebody else came near youi felt the winter's chilland now i sit and wonder night and daywhy i love you still?