<p>Telling your future roommate that they can’t use your fridge is going to cause tension right off the bat, and you really don’t want that. You’re going to have to live with this person all year, remember?</p>
<p>I think you have the wrong impression about how much you’ll be using your fridge. If you’re not in an apartment and don’t have a kitchen, you won’t have much need to buy a lot of food. You’ll probably eat the cafeterias 90% of the time. All I ever kept in my mini fridge was milk, juice, and some cheese sticks maybe. My roommate from freshman and sophomore year kept their stuff in the same fridge and there was never any space issue.</p>
<p>I understand not wanting a roommate to eat your food–that bothers me too. But that’s why you set ground rules about those sorts of things. You’ll more than likely have a roommate contract, so just put in it that you would prefer if they didn’t eat your food unless you both chip in for it or something. That’s way more polite and understandable than banning someone from using your fridge. You’d be ticked if it was the other way around, I’m sure.</p>