Boys are always hard to shop for!! (Not that i've ever had a boyfriend ((I am also a freshman!)) but i've imagined what presents i WOULD get a boyfriend!)
I think the football theme is good, but if you don't want to do it, don't! But here are a few ideas in that theme-
*Plain jersey with his last name on it and his fav. number
*Embroidered football (?)
Or, also, there is a lot other things you can do!
*frame a picture of you and him
*"Night out" on you
*Movie basket (movie, popcorn bags, candy, etc) for the two of you!
Hope this helps :):)