If you are a current student or graduate of Iowa State University you need to be a Cyclone fan. You should not be able to be a fan (which is short for fanatic) of any other team. Period. End of story. To have it any other way would be the equivalent of a guy playing for the Chicago Bears but currently being a Green Bay Packers fan.
I got my Masters from Oklahoma but I've always been an ISU fan and it will not change. As far as OU goes, I feel the same about their programs as any other ISU fan. I had my reasons for attending OU and they had nothing to do with athletics.