Alicia Torres and her roommate Maya were best friends until they moved in together. Three months later, they were barely speaking. The problem wasn't personality—it was money, specifically $340 in disputed expenses and no clear system for tracking who owed what.

How Small Amounts Became Big Problems

They agreed to split utilities, groceries, and household supplies equally. Simple enough. But Maya bought toilet paper one week, Alicia bought dish soap the next. Maya paid the internet bill, Alicia covered electricity. Neither tracked anything systematically.

After two months, Maya mentioned Alicia owed her money. Alicia disagreed, saying Maya owed her. They both had rough mental tallies that didn't match. Maya thought the difference was $85. Alicia estimated $40. Neither could prove their number because neither had records.

The tension affected everything. Alicia stopped buying shared items, worried she wouldn't get reimbursed. Maya felt taken advantage of. They started keeping separate food in labeled shelves. Their apartment felt like a hostile territory split down the middle.

The Solution They Should Have Started With

Alicia created a shared Google Sheet with five columns: date, item, cost, who paid, who owes whom. Every shared expense got logged immediately. At month's end, they calculated the net difference—usually $20-60 either direction—and settled with one Venmo payment.

They added house rules too. Shared groceries meant staples only: milk, eggs, bread, coffee. Personal preferences stayed separate. Utilities got split automatically via the billing apps. If someone bought something over $30 without discussing it first, they covered it solo.

What the System Actually Solved

It wasn't just about money accuracy. The spreadsheet eliminated assumptions and resentment. Neither person wondered if they were contributing fairly. The data showed exactly who spent what, removing all ambiguity and emotional interpretation.

What She'd Tell Other Students

Living with friends requires systems that friendships alone can't provide. Alicia and Maya's relationship recovered once money became transparent rather than assumed. They're still roommates now, two years later, because they established clear financial boundaries before the friendship broke completely.

The lesson applies beyond roommates. Anytime money intersects with relationships—splitting trip costs, lending cash, sharing subscription accounts—document everything. Trust doesn't replace clarity. Actually, clarity is what makes trust possible.