To do so: Find a spot nearby that has it all, from apple orchard, to cider press, to corn maze, and knock everything out in one weekend. Wear jeans & boots you don't care about getting dirty, because everything on farms is dirty. Your girlfriend is going to want to take pictures; take the pictures. Memories are dope, plus they'll be good #tbt fodder next spring. If you care about football, make sure to schedule this trip early in your team's schedule, to avoid missing a critical later-season game.
When it's all over, you'll find yourself with 10 pounds of squash, an ornamental stalk of maize, and the frustration of a weekend spent not watching football that hardly matters anyway. But you'll also have the peace of mind knowing that you crushed all your farm-date obligations in one fell swoop. Which brings us to...
Football: love it, hate it, tolerate it
According to harmful and misleading gender stereotypes, you're probably happy sitting around all fall watching football, and your fall girlfriend totally hates it.
This may or may not be true for you: there are a lot of girls who love sports, and a lot of guys who hate them. But for the vocal majority of bros out there who want to spend their Saturdays making fun of Kirk Herbstreit and their Sundays making fun of Keyshawn Johsnon, a gentle suggestion: be considerate of your girlfriend's time.
This is her weekend too, after all. If she wants to wear your team's jersey and hang out with all your buddies' girlfriends while you crush hot wings and compliment each others' Greg Jennings impression, hey -- that's terrific. If she doesn't, don't give her grief about it. And if it's really nice out and she asks you to watch, like, just a little less football and go do outdoor brunch instead, maybe do that every once in a while.
This is called a compromise, and it's critical to maintaining the strength of your pudge pact.