Wearing your Steelers colors in enemy territory is always fun. We wore them in Baltimore and man that was rough but I wouldn't have it any other way. In fact my wife won't go back there anymore because of all the flack we got and I gave it all back to them. I loved it but I can respect her opinion for not wanting to go back again.
In all seriousness regardless of the teams records at the time, keep an eye on your girlfriend if she goes to the restroom or for food or whatever. Mine got mobbed by a bunch of ugly ass, horrible Ravens women in the ladies restroom. Alcohol and bad football team make for some pretty nasty fans from time to time.