I still remember when we were HATED rivals.
The school I went to from '79-'81 was pretty evenly divided between Steelers and Cowboys fans. There were a few others but only a few. There was 1 Raiders fan and he carried a Raiders book bag. When the Steelers beat the Rams for the SB right after having beaten the Cowboys the Steelers fans were kings. Then the Raiders beat the Eagles and that 1 guy got to be king all by himself.
He reminded me of that guy from Schoolhouse Rock, "Hooray! I'm for the other team!" LOL!