Thoughts on this??

My S/O is a big guy like almost 400 pounds big but a lot of it is muscle and hes like 6’4. I have celiac disease (i can only eat certain things) we spent $110 on groceries. A week and a half later maybe, theres still normal food to eat but i have nothing gluten free to eat. He got upset because i havent ate today and said “we are spending $300-$400 on groceries next time” what he dont realize is he eats everything and wants/needs money for work. When hes supposed to be on a diet. Honestly if people knew more about our relationship they would think im crazy for staying.