Every couple does this differently and there’s no right answer. I would go away separately and think about what you can afford and what you would each consider fair. As the person with the lower income, be very clear about what your budget is. Then sit down and have a conversation together and see if you can find common ground. If there isn’t a situation you’d both be happy with then I’d delay it until you’ve graduated.

My partner and I split everything 50:50 even though I make less. We’re not at a point of contemplating marriage or a similar long term commitment so pooling our money doesn’t make sense to me. But we based searching for a place on what I was able to afford.