[Huntingwhale]

I've had this problem in the past with roommates, and quite frankly it sucks. I feel for you Papi34. Me and my ex lived with 2 other people who felt that it was their god given right to eat whatever we had bought. So what we did was instead of buying bulk food, we would go to the store when we got home and just buy enough food for the both of us.
The only thing that was in the shared fridge was stuff like milk and eggs (even those got consumed). It might suck having to go to the store everyday, but it was a solution that worked. The other 2 people actually ended up getting mad at us for not ''contributing'' to the house, but you know what, why should you have to pay for someone else's food? I would suggest doing the same thing. Get in the routine of just buying your own food after work each day, just enough for yourself. It might be a slight inconvenience, but it worked for me.

All in all, roommates suck. And having a roommate with a part time job, who doesn't go to school, is a red flag. I understand your a student and money is tight, so it sucks being stuck in that situation. But when you get the chance, move out and DO NOT GET A ROOMMATE. They suck for reasons just like this. The hot sauce solution is also good. Buy a bottle of Dave's Insanity hotsauce, and set a ''decoy'' food for him. When he eats it, he will get the message.