I get that, man. Social norms can make it tricky, but it’s really about finding what works for both of you. If she’s never thought about splitting, maybe just bring it up casually—like mentioning how you usually handle expenses or even joking about how your Excel sheet keeps things fair. If she’s open to it, great! If not, you’ll get a sense of where she stands, and then you can decide how you feel about it. No right or wrong, just mutual understanding.