This isn't a case of sour grapes

It made me sad,
when you did not come,
not because you did not come.
Because you had promised
you would come,
and yet you did not.

I was sad for a few days,
kept waiting for you,
but now I have realised,
your arrival
would not have changed anything,
I would have had to fight alone,
even if you would have wanted to help me,

you did not have the capability.

So I'm glad you did not come.

I would have felt really bad,

if you would have come,

and failed me.