Sorry, no. A rivalry must be reciprocated. We (Wisconsin) already have one.
You can't go around just proclaiming to be someone's rival. I would think Nebraska would be above that?
If you read the whole thread, you would have read that we aren't saying someone is our Rival, we are just discussing who would we LIKE to be our rival. 3 years in, we know that we don't have one, except for the forced (crappy) one that no Nebraska fan acknowledges.
As far as Oklahoma coming to the B1G, it will never happen. Reasons:
1. They would have to bring their little sister. That is what stopped them from going to the SEC in 2010.
2. They aren't in the Academic program that the B1G requires.
Also, Texas was never our Rival. Well, we thought they were, but at the same time, Colorado thought we were theirs (meaning that the Texas fans feel the same towards us as we felt towards Colorado fans, no sh*ts were given).