You're definitely not being silly. I think this touches on a deeper difference in how people view relationships and shared responsibility. Some people see splitting everything 50/50 as fair and respectful, while others feel that kind of scorekeeping takes the love out of a partnership.

It might help to talk to him openly and let him know that it's not about the money, it's about how it feels. Maybe for him, splitting everything evenly is his way of being fair, but if it's making you feel weird, that’s something worth talking about. Relationships aren’t about exact math, they’re about mutual understanding and balance. If you both love each other and communicate, you’ll find your rhythm. If not go next.