Why would you want to?
I know, you want to be the most important thing in his life. And you are, most likely. But you aren't the only thing in his life. A guy needs other interests, just like you do. You like going out with the girls? Play tennis every week? In a book club? Great. Everyone needs his or her thing. Your guy's thing is football.
The problem with football is that games occur on the weekend, which is prime relationship time. You don't want to give up that time with your guy. I get it. I have the same problem with my wife. I like to watch football every Sunday, and she likes to call herself a football widow from September to Christmas.
But here's the thing: I love football season. Love it. I read about it, I play fantasy football, I look forward to the games every weekend. Football makes me happy. Football makes your guy happy, too. And a happy guy is a better husband/boyfriend/father/whatever.
If he's not spending enough time with you during the week, that's another problem. But if he is, then I say let the guy have his Sunday football. I don't believe in making someone give up something if it's harmless and it makes them happy.
The solution here is compromise. Pro football games air all day Sunday, Sunday night and Monday night. He doesn't have to watch them all. Maybe you could spend some Sundays together and let him watch the night games instead. Or, if he wants to spend all day Sunday in front of the TV, then make Sunday night a date night, even if it just means making dinner at home. He can and should set aside that time for you if he's been hunkered down all day on the couch.
Another solution is the DVR. He can record games and watch them later; you could spend Sunday together and then give him Sunday night or another weeknight to watch the games. Some guys might object to not seeing the game live, but he'll just have to live with that. It's only compromise when each of you is willing to loosen your grip on the rope a little.
A third solution: watch football with him. Yeah yeah, I know, you hate sports. But have you tried watching football? You might like it. Many women do. It's a fun game -- brutal but fun -- and probably the most exciting sport to watch on TV. The commercials are great, too. Open your mind and try it.
Bottom line: there are ways around this, but you'll both need to be flexible. If he's unwilling to budge, dump his ass and find a guy who likes Hugh Grant so you can spend your Sundays watching crappy movies instead.
Good luck.
Leave him alone. Let him watch tv, girl. The main reason being; it makes him happy. One day a week, You can handle it
Don't you have any hobbies of your own? Times you wish you could get away from him for a few hours? Make his football time your "you" time as well, and do the things that he's not interested in, or that you'd rather do without him, like hang out with your girlfriends, read a book, or start that underground boxing ring that no one's allowed to talk about.