Pete the editor is back to mess with your mind:

He knows nothing
He hasn't a clue
He thinks I write about him
He doesn't know about you
If you were here
He'd be gone by tomorrow
It ain't going to happen
Just heartache and sorrow
The strong ,brought down
Oh the emotional cost
I played at love to (too) long
And this time I lost
I sat (set) him aside, I took you on
Just another game to play
Something happened I missed
It wasn't suppose (supposed) to be this way
Today I set him free
He don't (doen’t) deserve what I feel
We shared time in makebelieve (make believe)
What he had was real
Today I walk alone
What was it that came and went
Unanswered questions
I walk alone, content

Minor errors that are easy to fix.

Pete