Blackberry Picker

Maybe this will help... Juxtapose it with this:

When in dire times she dreamed
Future sickness she did need
Or if none would choose her near
A silver blade would whisper, “Here…”
So she turned from death and lies
So she came into your life
When need be you would be there
But, when she’s done, disappear
Waltzing down the street you sigh
Head held high, a mighty cry
Backwards go, and forget time
Back to her you’ll always climb

Just commentary upon myself
Well. Kinda myself. Started with myself xD Then it got generalized. "You" first referred to me myself and I but can just as easily be someone else.
Now that I think on it, this can be interpreted two different ways:

#1 - The picker is the person being used.
The picker does all the dirty work for the unnamed person "you". Then when all the work is done, "you" walks away, but thinks of something else, cries for the picker to assist, and so the picker begins to climb again. It's up to you whether or not the picker knows (s)he is being used.

#2 - The picker is the user.
The user squelches and uses up all of the energy "you" has. "You" watches the picker as (s)he continues to use, and eventually "you" decides to leave because (s)he is tired of all the work. It isn't exactly a healthy friendship. Then "you" hears the picker cry, and goes back, forgetting everything that's been done, and lets the picker climb upon him/her again.