What was it about?

When we where kids we used to play.
You had my back each and everyday.
But every once and a wile we would argue.
Who know if it was true.
But than one day the argue turned into a fight.
I don't remember who was rong or right.
Than we stoped talking .

That was our freshmen year
and now 20 years later I came to the reunion of our class.
Hoping to see you and apologize for what had been said.
Only to find you died two months earlier.

And the sad thing is I don't even remember what we fought about.