You forgot something sir

Have you ever met someone

You just wanted to rip your heart out 
And hand it to them
Shout
Here!
It's obviously yours!
So take it with you when either of us goes 
The security cameras have been turned off,
The guard sent home.
Please take your stolen goods
And leave my store with what's rightfully yours.

It was priceless to me, by the way

But useless inside me beating in two.