I wouldn't call it symbiosis.
What the hell should it be called?

I write. I'm just one more old man
Who fills his time by making things.
I am not good with math or tools,
Needles, whiteboards, algorithms.
All that I can use are words
And music, which you may not hear.
It's not of great importance to me
Whether what I write is read.
I'm satisfied completely simply
Seeing what I've made.

You are reading what I've written.
Why? Because you've finished work,
You're bored, there's nothing on TV,
Or, sometimes, rarely, poems you read
Please and resonate with you,

Poems others may have written.
Right now, you are reading mine,
But there's no sign of symbiosis.
I wrote for myself, not you,
And, doubtless, you just chose
To read. You didn't search for me.