Written for the 1949 film by the same name, this song was sung by an offscreen Mears while the protagonist (Susan Hayward) is in a nightclub. It was nominated for the Oscar for Best Song and reached No. 1 on the Billboard charts in the U.K.
The night is like a lovely tune
Beware my foolish heart
How white the ever constant moon
Beware my foolish heart
There's a line between love and fascination
That’s hard to see on an evening such as this
For they both give the very same sensation
When you're lost in the magic of a kiss
Your lips are much too close to mine
Beware my foolish heart
But should our eager lips combine
Beware my foolish heart
For this time it isn't fascination
Or a dream that will fade and fall apart
It’s love, this time it's love
My foolish heart
My Foolish Heart was written by Victor Young & Ned Washington.