Most relationships don't end in a single dramatic fight. They erode, slowly, through four habits that creep into the way two people speak to each other. Researchers have studied these patterns for decades, and they show up so reliably before a breakup that they've earned a grim nickname. I want to walk you through all four — not to alarm you, but because once you can name a habit, you can catch yourself doing it.

1. Criticism instead of feedback

There's a difference between telling someone what hurt you and attacking who they are. Feedback sounds like, "I felt ignored when you checked your phone at dinner." Criticism sounds like, "You always make everything about yourself." The first describes a moment. The second indicts a whole person. When every complaint becomes a verdict on your partner's character, they stop hearing the request underneath and start defending themselves — which leads straight to the next habit.

2. Defensiveness and never owning your part

The moment something goes wrong, some of us reach for a shield. "It's not my fault, it's because of you." "You behave this way, so I had to." The blame bounces back instantly, and responsibility never lands anywhere. In a healthy relationship, the ability to say "yes, that part was on me" is one of the most powerful things you can offer. Taking responsibility isn't weakness. It's the thing that lets a conflict actually resolve instead of looping forever.

3. Contempt — the most corrosive of all

This is the one that worries me most. Contempt is when you start treating your partner as beneath you. It comes out in sarcasm, in mockery, in that little eye-roll. "Oh, so you finally managed to do the maths? Good for you." "You don't even know who India's first Prime Minister was?" It's said as a joke, but the message underneath is clear: I look down on you. Contempt makes the other person feel small, and you cannot build closeness on top of someone you've decided is inferior. Of the four, this is the strongest predictor that a relationship is in real trouble.

4. Stonewalling — building a wall and disappearing

This is the silent one. Whenever there's a disagreement, you shut down completely. No calls, no texts, no eye contact, nothing. You don't want to interact with the person at all. Some people genuinely believe this protects them — "I just need space, it helps me stay calm." And a short pause to cool down is fine. But stonewalling isn't a pause; it's a wall. The other person is left alone on the other side of it, with no idea when, or whether, you'll come back.

Why naming them matters

Here's what I find hopeful about these four. None of them is a fixed personality trait. They're learned reactions, usually picked up from how conflict was handled in the homes we grew up in. Criticism can become a specific request. Defensiveness can soften into curiosity. Contempt can be replaced by genuine appreciation — saying the kind thing out loud instead of swallowing it. And stonewalling can become an honest "I'm overwhelmed, give me twenty minutes and I'll come back to this."

Watch yourself for these patterns the next time you're upset, not your partner. That's where the real change starts. And if you'd like, I'll do a separate piece on the green flags — the small everyday behaviours that quietly tell you a relationship is healthy.