Riddlin'

Here's one for all of you who like riddles:

Never ever,
Often.
Nine, ten.
One, none.
Ten in net,
Forever even.

What is it?

Did you figure it out???

If you said something to do with opposites, you are close....here is another clue...

Yet is opposition de-divided?
Six is a tube.
Nine 'tis opposite nine,
But a six is de-divided.....
No! It is opposite "Y".