Red flags in a relationship: which matter and what to do

What counts as a red flag in a relationship?

A red flag is a repeating behaviour that costs you your freedom, your money, your friendships, your confidence in your own memory or your physical safety. Three tests separate a warning sign from an ordinary difficulty.

• Does it repeat? Once is an event, and every few weeks for a year is a pattern.
• What happens when you object? A difficult partner argues with you, and a harmful one makes objecting expensive until you stop.
• Is your world getting smaller? You have fewer friends, fewer plans of your own, less money you control and less certainty about what happened last Tuesday.

I trust the third test most, because you do not have to name the behaviour correctly to use it. The harm is widespread: the World Health Organization estimates that about one in 3 women worldwide have experienced physical or sexual violence from an intimate partner or sexual violence from someone else, and it states that the real figure is likely to be higher.

Which red flags in a relationship matter most?

The red flags that matter most are the ones that narrow a life, and control comes first. A Monash University research brief describes coercive control as ongoing, chronic and routine, so the incidents sound small when you describe them one at a time.

• Control. Your partner decides where you go, who you see and what you spend, and checks your phone.
• Contempt. Sarcasm, eye rolling and mockery tell you that one of you has stopped seeing the other as an equal.
• Your memory is wrong. You are told, steadily, that the event you remember did not occur and that your judgement is the problem.
• Intensity far too fast. The warmth withdraws sharply at your first sign of independence.
• Warmth on and off. Attention arrives on a schedule you are unable to predict, and that holds you harder than steady absence.
• Walking on eggshells. You monitor your tone, your face and your plans in advance to head off a reaction.
• No repair. Every apology is followed by “but”, and small injuries pile up.
• Threats. Mentioning that you might leave reliably produces a crisis or a punishment.

Read more about gaslighting in a relationship and love bombing.

What is not a red flag, even though it feels like one?

Half of what circulates as a red flag is a description of an ordinary person.

• A friendly ex. Good terms with an ex usually show somebody who ends things decently.
• Time alone. Withdrawal used as punishment is a problem, and recharging alone is a preference.
• Bad at texting. Communication style and character are separate things.
• A difficult family. Almost everybody has something, and what counts is what they have done with it.
• Therapy or medication. This appears on lists and it is the opposite of a warning sign.
• A bad year. Bereavement, a new baby, redundancy or a move abroad makes people worse company while they are drowning.

A partner who moved to Copenhagen for your job, without work, language or friends of their own, often looks like a person who has changed for the worse. Read more about when your partner is Danish and you are not.

Why are red flags so hard to see from the inside?

Red flags are hard to see because none of them arrived as a red flag. Each arrived as a reasonable request, then a slightly less reasonable one, and every step was small enough to accept without a row.

• Small steps. Nobody agrees on the first date to stop seeing their friends; they agree, 2 years in, that this particular Friday is difficult.
• The story of your life. Recognising the pattern means the year you called a hard patch was something else.
• Editing yourself. You manage your face, your plans and your friendships to avoid a reaction.
• Labels. “Toxic” and “narcissist” start an argument about whether the word fits, while behaviour is checked against what happened.

Feeling that you are making a fuss about nothing is no evidence that you are. Read more about toxic relationships.

Is couples therapy the right room when there are red flags?

Couples therapy is the right room for contempt, defensiveness and lost repair, and the wrong room where one partner controls or frightens the other. This is my position, and I hold it firmly.

• New vocabulary. Couples therapy hands the controlling person fluent new language for what they are doing.
• Honesty at a cost. It asks the frightened person to be honest in front of somebody they go home with.
• Individual work first. Each person works separately, and the questions about the relationship come later.
• What changes. Contempt and defensiveness change with work, because underneath are 2 people frightened of each other.
• What changes rarely. Control changes only when the person doing it takes it on as their own problem, in their own therapy, over a long period.

If you recognise yourself on the wrong side of the list, what predicts change is hearing the effect on your partner without explaining your reasons.

What do I do about a red flag I have just recognised?

Go slowly, and take these steps in order.

• Write it down. Note dates, what happened and what it cost, somewhere your partner has no access to.
• Count the edits. List the last 6 times you changed a plan or softened a sentence because of how your partner might react.
• Tell one person. You are breaking the isolation, and you need no verdict from them.
• Check your footing. Know where your money is, whose name is on what, and where you would sleep for a week.
• Test one thing. Name one change you want, say it plainly once, and treat what happens next as information.
• Look again in 6 months. The test is whether the behaviour is different, and remorse alone tells you little.

Read more about whether to leave or stay.

These steps fail when objecting has become too expensive to try, or when you no longer trust your own account of what happened. That is what the session is for.

Questions people ask

What are the biggest red flags in a relationship?

Control over your money, your movements and your friendships does the most damage. Contempt, a steady attack on your memory and threats around leaving follow.

Is it a red flag or am I overreacting?

Ask what has changed since the relationship began. Fewer friends, less money of your own and a habit of editing what you say are the pattern.

Does couples therapy help a relationship with red flags?

It depends which ones. Contempt and defensiveness respond to couples work, and control calls for individual work first.

Is my partner toxic or a narcissist?

Neither word tells you what to do next. Describe the behaviour, because behaviour is checked against what happened.

What if I am the one showing the red flags?

That is the most workable position there is. Most of this behaviour is protective in origin, which explains it and excuses none of its effect.

Sources

• World Health Organization, Violence against women, fact sheet, 2026
• Monash University, Research brief: coercive control

How this article was written. I choose the subject and the angle. An AI assistant researches and drafts. Nothing is published until I have read it, corrected it and stood behind every clinical statement in it. The professional and clinical judgement is mine and mine alone.