If it is just you 2 and you aren’t paid, it should be closer to 50/50, but really it depends on the work needed at the moment. It will get diluted with funding eventually.
But it also matters if he has put money into the company and you haven’t, etc.
Having been in this situation, it led to a merger and growing our company something like 2000% in 2 years.
It was the most worth-while meeting I had especially compared to investors who just want a hand in the deal and nothing else.