Is it okay to ask your boyfriend to split grocery cost?

My boyfriend and I decided to rent a place to stay and split that. We also wanted to spend the night cooking together so I went to get the groceries. I don't work many hours as I am still in school so I want to ask to split it but I don't want to end up looking stingy. I spent around $55 on groceries. Is it too stingy or should I just ask him to split?

It's not stingy. Ask him to split
It is stingy
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Is it okay to ask your boyfriend to split grocery cost?
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