A Chicago Cubs and White Sox Fan?
I'm not just a "Chicago fan." I love Chicago, but for the Cubs and Sox... I was raised on both teams. I probably would choose Cubs over Sox, but I am not resentful. I am still a White Sox fan. I went to my first Sox games only a few weeks after my first Cubs game. I've been to White Sox training camp (fun few days of fielding and batting with a lesser White Sox player).
Thus, not one Sox fan can spew hatred of the Cubs at me. It will roll off. The White Sox will rise, so follow the Cubs.
DO IT FOR GRANPA, WHITE SOX!