Early 70s. It had the line (from memory): “you are the answer to all my questions before they’re through; my Cherie I’m in love with you”. All my Googling brings up Stevie Wonder. It wasn’t a big hit, but it played for a while. Thanks for any help 
beat me to it
“You were the answer of all my questions Before were through”
“Ma belle amie I’m in love with you”
Thanks! It was driving me crazy!
It reached No. 5 on the US Billboard Hot 100 and No. 3 in Australia and Canada in 1970, No. 1 in South Africa, and reached the Top 10 across central Europe.
I had to look up this line: “Let’s all give my substitute a big cheer.”