I'm Building Up To An Awful Letdown

I'm like Humpty Dumpty
Up on the garden wall
I'm riding high and who can deny
That whatever goes up must fall
Poor old Humpty Dumpty
He got the toughest break
And yet his fall was nothing at all
Like the tumble I'm gonna take
I'm building up to an awful letdown
By playing around with you
You're breaking down my terrific buildup
By treating me as you do
My castles in the air
My smile so debonair
My one big love affair
Is just a flash
Will it go smash
Like the nineteen twenty nine market crash?
I'm building up to an awful letdown
By falling in love with you
I'm building up to an awful letdown
By falling in love with you