Yeah, really. No vows. No officiant. No wedding cake. Just… time, a shared address, and a pile of split utility bills — and some states will look at that and say: you’re married.
It’s called common law marriage. The basic idea is that if two people live together, hold themselves out to the world as a married couple (think: introducing each other as spouses, filing taxes together as married, sharing finances), certain states recognize that relationship as a legal marriage. Note: simply living together or splitting bills is generally not enough on its own — the “holding out as married” piece is key. The exact rules vary significantly by state, and not every state allows it at all — but in the ones that do, this is a real thing with real legal consequences.
So what does that actually mean for you? It means if you and a partner split up after cohabiting in one of those states and your relationship meets the threshold, you might need an actual divorce to legally end the relationship — even though you never technically got married. Property, debts, financial entanglements — all of it could be on the table.
The states that currently recognize common law marriage include Colorado, Iowa, Kansas, Montana, New Hampshire (for inheritance purposes only), Rhode Island, Texas, Utah, and Washington D.C. Oklahoma’s status has become legally uncertain following recent court decisions, and South Carolina abolished common law marriage for relationships formed after July 24, 2019. A handful of other states — including Pennsylvania, Ohio, and Idaho — recognize common law marriages that were formed before a specific cutoff date, even though new ones can no longer be created there. The rules shift over time, so it’s worth double-checking your specific state’s current laws if this is relevant to your situation.
Here’s what’s wild: most couples who end up in this situation weren’t trying to get married. They were just living their lives — splitting expenses, managing shared finances, building a life together. Nobody handed them a warning label.
The fix isn’t to panic or refuse to ever move in with someone. It’s just to know this exists. If you’re in a state that recognizes common law marriage and you’re moving in with a partner, it’s smart to understand what your state considers the threshold — and to have honest conversations about finances and expectations early, before things get complicated.
Knowledge is the whole game here. You can’t protect yourself from rules you don’t know exist.