The Science of Love: 4 behaviours that predict a breakup
Dr John Gottman, a renowned psychologist and relationship researcher, has spent over 40 years studying couples at the Gottman Institute in Seattle. He’s best known for his work in the “Love Lab” – a space where couples are observed and studied to understand what makes relationships thrive – or fall apart.
Amazingly, Dr Gottman can predict with 91% accuracy whether a couple will stay together or break up – after observing just 15 minutes of their conversation.
His findings are rooted in science and decades of data, and while the research focuses on married couples, the insights apply to any long-term relationship.
At the heart of his findings are four key behaviours… which he calls the ‘Four Horsemen’… that are strong indicators of relationship breakdown. If these show up frequently in your relationship, it could be a sign that something needs attention.
4 Behaviours that predict a breakup
These are the four specific patterns of language, or what he refers to as the ‘4 Horsemen’, that indicate a relationship is in trouble and that a breakup is likely.
1. Criticism: Attacking the person, not the problem
It’s normal to raise issues in a relationship – but there’s a big difference between a complaint and a criticism.
A complaint focuses on a specific behaviour: ‘I feel frustrated when you don’t help with dinner.’
A criticism attacks the person: ‘You never help around the house. You’re so lazy.’
Phrases like ‘you always’, ‘you never,’ or ‘what’s wrong with you?’ are classic signs of criticism. These attacks lead to defensiveness and distance.
A better approach?
Focus on how you feel and what you need, without blaming or labelling the other person. Describe the behaviour, not the person.
2. Contempt: The most damaging of all
Contempt is more than frustration – it’s disrespect. Think eye-rolling, sarcasm, sneering, mocking, or talking down to your partner.
This is the most serious sign of trouble within a relationship and can indicate that one partner has already emotionally cut off from the other.
This behaviour puts you in a position of superiority and makes your partner feel worthless. According to Gottman, contempt is the single strongest predictor of divorce.
It often builds from long-standing resentment and unresolved issues.
What helps?
Stop sarcasm in its tracks. Make a daily habit of showing appreciation and respect – even in small ways. Gratitude is the antidote to contempt. Make the effort to address long-standing issues.
3. Defensiveness: Shifting the blame
Defensiveness is really a way of blaming your partner and saying, ‘The problem isn’t me, it’s you’.
When we feel criticised, our instinct is often to defend ourselves. But defensiveness sounds like:
‘That’s not true, I didn’t do anything wrong.’
‘Well you never do it either.’
This kind of response escalates tension and blocks resolution. It sends the message: ‘The problem isn’t me – it’s you.’
Instead:
Try to stay calm. Take a breath. Ask questions like, ‘Can you help me understand what’s upset you?’ Or acknowledge your part: ‘I can see how that annoyed you – let’s talk about it.’
4. Stonewalling: Shutting down instead of speaking up
Stonewalling happens when one partner shuts down and disengages… mentally or physically… during conflict. They might walk away, go silent, or stare blankly. It feels like hitting a wall.
It’s usually a sign that the person is overwhelmed or has emotionally checked out and is a passive aggressive response. You might get a comment like ‘Nothing’s worng’
What to do?
If your partner is stonewalling, back off and give them space. Don’t chase them or push them to carry on the discussion. When they’re ready to re-engage, focus on keeping the conversation calm, neutral and focused on a solution without then reverting to the other three language patterns.
To summarise
These four behaviours – criticism, contempt, defensiveness and stonewalling – don’t just cause conflict. They erode the foundation of a relationship when they show up regularly.
The good news is, once you know what to look for, you can start changing how you respond – and improve how you both communicate.
If you notice any of these patterns in your relationship, don’t panic. We all fall into them from time to time. What matters is how quickly you recognise them and shift course.
If your relationship is feeling tense, disconnected, or uncertain, it might help to talk it through with someone objective.
Book a free clarity call and we’ll explore what’s going on – and how coaching can help you feel clearer about what you want and how to move forward.
