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Five to One: The Math of Staying Together

Five to One: The Math of Staying Together

There is a surprisingly small number that predicts whether a relationship will stay together.

It’s 5 to 1.

The Gottmans’ research found that healthy relationships have five positive interactions for every one negative. A negative interaction might be a criticism, a sigh of irritation, a raised voice or a pointed correction. A positive one might be a compliment, a thank you, a hug, a smile or a moment of genuine appreciation.

When the 5 to 1 relationship ratio drops for a long stretch, relationships can start to unravel.

What is the 5 to 1 relationship ratio?

The 5 to 1 relationship ratio doesn’t mean pretending everything is perfect or never disagreeing.

Conflict is normal. Bad days happen.

What matters is what surrounds those moments.

Positive interactions act as a buffer. They soften the impact of hard conversations and remind both of you that you are valued and liked.

And the small things are doing most of the work.

A kind word in passing. A thank you said out loud. A hug for no reason. A moment of affection before rushing out the door.

Holidays and anniversaries help, but they aren’t doing the heavy lifting.

How negativity can creep into a relationship

Negativity is sneaky.

It creeps in when we’re tired or distracted. We correct more than we compliment. We notice what hasn’t been done rather than what has.

Over time, even mild criticism starts to feel heavy when it outweighs the positives.

Most negative interactions aren’t meant to hurt. They’re practical. Efficient.

“Can you do this differently?”

“Aw, you forgot?!”

“Why didn’t you just…?”

Nothing wrong with any of those on their own. But unbalanced by warmth, they can shape how safe and loved a person feels in the relationship.

Small positive interactions matter

Positive interactions don’t need to be grand gestures. They just need to be real.

Notice the effort.

Say thank you, out loud.

Show affection without a reason.

That compliment that feels too obvious to mention? Say it anyway.

This takes intention. It can feel awkward, especially if no one modelled this kind of warmth to you growing up.

Compliments don’t always come naturally in long relationships, where we assume the other person already knows how we feel or where we show our love in other ways.

But appreciation that stays unspoken doesn’t count toward the ratio.

Think of it like a garden. You don’t need constant sunshine, but you do need enough of it. Without it, things wither.

Five positives for every one negative.

A relationship check-in for the week ahead

Pick three days this week and notice your own interactions with your partner.

Jot down the positive and negative moments in your notes app or a journal. If you aren’t seeing any negativity, look harder. We all do it.

At the end of the week, tally the ratio.

Where could you add a little more warmth?

Small things, done often, do more for a relationship than grand gestures.

By Sarah Moon

Sarah is a lawyer and the owner of Clean Break. She was raised by divorced accountants, which, in retrospect, was fairly on-brand. If you are separating, she will help you figure out who gets what.

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