Roommate's Partner Lives Here and Doesn't Pay

Your roommate’s boyfriend has been at the apartment four nights a week for two months. He takes 20-minute showers. He eats your roommate’s groceries (and sometimes yours). He uses your wifi, your AC, your couch. He doesn’t pay rent.

When your roommate’s partner is not paying rent but is functionally living there, it’s a real money issue, not a vibes one. They’re using utilities you’re splitting. Your water bill is up. Your roommate is being weird about it because they know. Here’s how to handle it without nuking the friendship.

When does “staying over” become “living here”

The standard rule most leases use: more than 14 nights in a month counts as occupancy. That’s about three or four nights a week. If their partner crosses that line consistently, they’re a tenant in everything but name.

Signs they actually live there:

• They have a drawer
• Their mail comes to the apartment
• They’re there when your roommate isn’t
• They use the kitchen unsupervised
• You see them more than your other friends

If three or more of those are true, it’s not a guest situation anymore. It’s an undisclosed third roommate.

How do I bring this up with my roommate?

Direct, calm, and framed around fairness — not the partner. The conversation is with your roommate, not their boyfriend. Try this:

“Hey, can we talk about [partner]? I don’t have an issue with him being here, I like him. But he’s been around basically every day this month and our utility bill is up. Can we figure out a fair way to handle it?”

That phrasing works because it:

• Doesn’t attack the partner
• Acknowledges the relationship
• Anchors to a real number (the bill)
• Asks for a solution instead of demanding one

What you want to avoid: “Your boyfriend needs to start paying rent.” That’s an ultimatum and your roommate will defend their partner before they hear you.

How much should a roommate’s partner pay?

Depends on how often they’re there. Standard fair-contribution math:

• 2 nights or fewer per week: Guest. No contribution.
• 3–4 nights per week: Half-resident. Should contribute to utilities (not rent). Roughly 1/4 of the utility bill is fair.
• 5+ nights per week or living there: Full resident. Should pay a full share of utilities and either rent contribution to your roommate or a discounted rent split among everyone.

Concrete example: rent is $2,000 split two ways, utilities are $200. Partner is at the place 4 nights a week. A fair monthly contribution is around $50 toward utilities. If they’re there 6 nights a week, it’s closer to $300–$500 toward total household costs.

Your roommate may push back on the rent piece. That’s fine — but utility contribution from a partner who lives there is not unreasonable, and most people will agree once the bill is in front of them.

What if my roommate refuses?

You have three levers:

1. Check the lease. If the lease has an occupancy clause (most do), their partner being there 5+ nights a week is technically a violation. You don’t have to escalate to the landlord, but you can mention that you noticed it. Sometimes that’s enough.

2. Adjust the split. If they won’t get their partner to contribute, propose changing your utility split. “Okay, if [partner] isn’t going to chip in, can we split the electric 40/60 since you’re using more of it?” That puts the cost where the usage is.

3. Decide what you’ll do at renewal. If you can’t get to a fair arrangement, that’s signal for whether you sign another lease together. Don’t burn the current one — just don’t re-sign into it.

What if it’s affecting other stuff too

Sometimes the partner moving in isn’t just about money — it’s about the apartment feeling like theirs and yours, not yours and your roommate’s. If your roommate’s partner is around so often that you can’t have friends over, watch TV in the living room, or walk around in pajamas, that’s its own conversation. Our guide on how to set guest rules with roommates covers the boundaries side.

How homies handles this

homies tracks every utility and shared expense automatically, so when your roommate’s partner is around, you have actual numbers to point to — not a guess. “The electric jumped $40 last month, here’s the chart.” It also lets you set up a guest contribution split so the partner can chip in directly without you and your roommate doing math at the kitchen table.

rooming, minus the drama. Join the waitlist at joinhomies.app.