Swallow's Tail

I'm sorry.
I got spun out.
It was a shock to me.
I got run out.
He was a good boy,
No trouble.
He was a decoy,
A body double.
We've got no more plans,
Just emptying hands.
Send me a little word,
Please send me one word.
There is a velvet heart, all stuck with pins.
You know I love that heart, and every one of those pins.
The moon is paper thin, it sticks in my mind.
How does a simple pin become an assegai?
Now all these plans,
Just water through our hands.
Send me a little word,
Please send me one word.
Sometimes you add, sometimes you subtract,
You open a door but then turn your back.