Fade to black

This week's Poetry Jam task, set by Chris of Enchanted Oak, is to write an elegy for something we have lost, whether it be a loved one, lost youth, innocence, anything. I was thinking of something along these lines for next week's prompt, and I'll just have to find another, now! Anyway, my poem about a lost friendship:

Farewell to Iris

I don't know what I did.
I don't know what I said.
If indeed it was anything at all to do with me.
But you could have left me a message
Stop calling
Give up.
And I would have stopped
Instead of lingering.
Instead of believing our mutual friends
who said you were just very busy
in their effort to be kind.
I have given up now.
For a long time
I imagined that if I met you in the street,
I would feign delighted surprise, as if it had only been a week,
and then drop you in my turn.
Or I would warmly greet your husband,
and act as if you were absent.
Or any of a hundred scenes.
I hold my grudges as tightly as my friends.
Now, I would just pass on by.
You, just another face in the crowd.
Perhaps this has already happened,
And I didn't even notice.