My (30F) boyfriend (28M) wants to move in but not pay bills...?

I have been living on my own since 18. My boyfriend has always lived with his parents, they have a large home and it's culturally normal for him (they are immigrants).
We have been together for a little over a year and in the last 6 months or so he has been spending more and more time at my place. The other day I talked to him about potentially moving in together next year/in a few months.
I was surprised by his reaction. One of the things I wanted to iron out was finances, because he is never volunteering to pick up groceries even though he eats my food and drinks my drinks.
He basically said that he doesn't think that he should have to contribute to anything that I currently pay for myself. Since I pay my whole rent myself, he doesn't feel he should subsidize that. And internet too. He said with things like electricity, since it would cost more having him there, he would pay the difference, but we would have to calculate that amount each month, and he wasn't sure exactly how to do that.
Is this normal for a relationship? I feel that we should just be splitting all expenses in half and I don't understand why he is expecting a free ride. He acted like this was a completely normal thing though so I am wondering if I am in the wrong? If I'm right and we should just split living expenses in half then how do I explain that to him without being rude?
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tl;dr: Boyfriend wants to move in together but not pay for anything (almost)


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