This Happy Madness

What should I call this happy madness
That I feel inside of me
Some kind of wild October gladness
That I never thought I'd see?
What has become of all my sadness
All my endless lonely sighs
Where are my sorrows now?
What happened to the frown
And is that self contented clown
Standing grinning in the mirror really me?
I'd like to run through Central Park
Carve your initials in the bark
Of every tree I pass for every one to see
I feel that I've gone back to childhood
And I'm skipping through the wild wood
So excited that I don't know what to do
What do I care if I'm a juvenile
I smile my secret little smile
Because I know the change in me is you
What should I call this happy madness
All this unexpected joy
That turned the world into a baby's bouncing toy?
The god's are laughing far above
One of them gave a little shove
And I fell gaily gladly madly into love.