Jets Game a Big Deal?

January 24th was the first I ever watched the Jets game. Even though I have been to all the Football games in the high school (because of band), I still don't understand football. Since Freshman year when i moved here from another country, I had a feeling I would never know how to play this game. When I was watching it with my boyfriend, his feelings would switch up here and there whether they were losing or not. But I kept asking what was going on =/. When the game was halfway over, he got upset (since he was a Jets fan) and I didn't understand why it's such a big deal. I guess I'll never understand that. haha.