Toxic relationships: how to recognise them and leave

Some relationships, instead of adding to your life, take away from it. They leave you exhausted, feeling as though you are walking on eggshells, apologising for everything, or not recognising yourself in the mirror. Many people come to therapy saying "I don't know if what I'm living is normal" or "maybe I'm exaggerating." If that sounds familiar, stay with us: this article is for you.

We are talking about toxic relationships without drama and without easy labels. We will look at how to tell a harmful dynamic from a rough patch in a couple, why it is so hard to leave even when you can see it clearly, and what steps you can take to recover your wellbeing, always at your own pace and putting your safety first.

What a toxic relationship is (and what it is not)

"Toxic relationship" is not a clinical diagnosis, but a popular expression for bonds in which the everyday dynamic hurts you in a sustained way: emotionally, psychologically and, in some cases, physically too. What matters is not a single episode, but the pattern that repeats and how you feel inside it.

It is best not to use the word lightly. A relationship is not toxic because there are arguments, because the two of you sometimes struggle to understand each other, or because one of you is going through a difficult time. Nor is it necessarily toxic because of differences in personality. All couples have friction and make mistakes.

What defines a harmful dynamic is that an imbalance takes hold: one person controls, belittles or manipulates, and the other gradually loses space, self-confidence and freedom. Moreover, responsibility is rarely "shared equally between two": the person who is being harmed is not to blame for it.

Warning signs worth paying attention to

No single sign is enough to draw a conclusion, but when several appear together and keep repeating, it is worth stopping to take a closer look. In therapy we often see these:

• Control: they ask to know where you are at all times, check your phone, decide who you can talk to or how you should dress.
• Constant jealousy: they present it as proof of love, but it makes you justify yourself continually and live under suspicion.
• Contempt and constant criticism: mockery, sarcasm, "joking" humiliations, comparisons that hurt you.
• Isolation: little by little you drift away from friends and family, either because they reproach you for it or because you avoid conflict.
• Emotional manipulation: punishing silences, blackmail, threats of abandonment, or phrases like "if you really loved me, you would do it."
• Blame: you end up apologising for things you haven't done, or you are convinced that everything that goes wrong is your fault.
• Boundaries that are not respected: you say "no" and it isn't taken into account; your decisions, your privacy or your time are argued over again and again.
• Doubts about your own perception: they make you feel that you remember things wrongly, that you are exaggerating, or that you are "crazy."

An important point: often these behaviours do not appear all at once. They creep in little by little, so that each step seems small and it is hard to see the whole picture.

The roller coaster: from idealisation to contempt

One of the most bewildering patterns is that of alternation. There are phases of great intensity, attention and promises, in which it seems you have found the person of your life. And suddenly coldness, reproach or humiliation arrives, without you quite understanding what has changed.

Reconciliation usually follows: apologies, gifts, kind words, the feeling that "this time it's different." And the cycle starts again. This alternation between idealisation and devaluation creates great emotional confusion, because you don't know which person you will meet each day and you end up focused on pleasing them to avoid the next blow.

If your mood depends almost entirely on your partner's mood, it is a clear sign that something is not working.

Normal conflicts versus a harmful dynamic

A very common question is where the line lies. These questions can help you find your bearings:

• Can you express your disagreement without fear of the consequences?
• After an argument, is the bond repaired, or do resentment and punishment remain?
• Is the conversation about the behaviour ("this hurt me") or does it attack the person ("you're a disaster")?
• Do you both take responsibility, or do you always end up carrying the blame?
• Do you feel more like yourself within the relationship, or less and less so?

In a healthy couple there are arguments, but also respect, the possibility of a genuine apology, and room to be who you are. In a harmful dynamic, conflict is used to dominate, not to understand each other. The key is not how often you argue, but how you do it and how you feel afterwards.

Why it is so hard to leave

From the outside it is easy to say "just leave." From the inside, the reality is far more complex, and it has nothing to do with weakness or a lack of intelligence. There are well-known psychological mechanisms that explain why it is so difficult to walk away:

• Intermittent reinforcement: when good moments appear unpredictably among the bad ones, the bond becomes more intense and harder to let go of. The evidence suggests that unpredictable rewards produce a very strong attachment.
• Hope that they will change: you remember the person from the beginning and think that if you hold on or try harder, they will come back.
• Emotional dependence and attachment: if in your history you have learned that love demands sacrifice, or if you find it hard to be alone, the fear of emptiness weighs heavily.
• Low self-esteem: after months or years of criticism, it is easy to believe that no one else will love you or that you deserve what is happening to you.
• Fear: of the other person's reaction, of loneliness, of what people will say, of financial or housing changes, or of hurting them.
• Accumulated investment: years, projects, children or shared friendships mean that leaving feels like an enormous loss.

If you are still there, it is not because you are naive. It is because you are holding up something that, on top of everything, you have been led to believe depends on you.

The impact on your self-esteem and mental health

Living in a harmful relationship is not harmless. Prolonged exposure to criticism, control and insecurity usually takes its toll. In therapy it is common to see:

• Constant anxiety, hypervigilance and difficulty relaxing.
• Sadness, low mood and, at times, depressive symptoms.
• Disturbances in sleep and appetite, headaches or muscle tension.
• Loss of confidence in your own judgement and fear of making decisions.
• A sense of emptiness, of having lost yourself.

Over time, the other person's critical voice can end up becoming your own inner voice. That is why recovering your self-esteem is an essential part of leaving and of healing, even after the relationship has ended.

If you are afraid for your safety

We want to be clear about this: when there is abuse, the priority is your safety, not saving the relationship. Continual insults, threats, violence, extreme control or any situation in which you feel afraid are not a communication problem that can be fixed with goodwill.

If you fear for your safety or that of your children, in Spain you can call 016, the helpline for victims of gender-based violence. It is free, confidential, available 24 hours a day and leaves no trace on your phone bill. If you are in immediate danger, call 112. Asking for help is not exaggerating: it is protecting yourself.

Before taking any step, it is worth thinking about how to do it safely, because the moment of separation can be the most delicate. A professional can help you plan it calmly.

What you can do: steps to get started

There is no single way to leave and no correct timetable. These steps can serve as a guide:

• Put a name to what is happening. Recognising that something is hurting you is not betraying anyone; it is the first act of care towards yourself.
• Tell someone you trust. Breaking out of silence and isolation lightens the load and gives you back perspective. A friend, a relative or a professional.
• Rebuild your network. Gradually get back in touch with the people who do you good, even if it is just with a message.
• Start setting boundaries. Small "no"s sustained over time, whenever it is safe to do so, give you back a sense of control.
• Prepare an exit plan. Think about where to go, what you need to take, financial matters and people who can support you. Do it with help and discreetly if there is any risk.
• Look after your self-esteem. Return to activities you used to enjoy, keep up sleep and rest routines, and speak to yourself with the kindness you would show someone you love.
• Don't do it alone. Leaving with company is safer and easier to bear.

It is normal to doubt, to move forward and to go back. Many people need several attempts before ending a harmful relationship, and that does not mean failure: it means you are processing something big.

How therapy can help you

Individual psychological therapy offers a safe, non-judgemental space in which to make sense of what you feel and to understand what has kept you in that relationship. Among other things, we work on self-esteem, managing guilt and fear, attachment patterns and the ability to set boundaries. When the relationship has ended, we also support you through the grieving process and the rebuilding of your sense of identity.

If at some point both of you want to try to change the dynamic, and provided there is no abuse and no risk to you, couples therapy can be an option, after a careful assessment. When there is violence or fear, working together is not appropriate: safety comes first, followed by individual work.

You don't need to have everything figured out to ask for help. Sometimes a first conversation is enough to start seeing what you are going through with different eyes.

One step, however small

Leaving a toxic relationship does not happen overnight, and you don't have to do everything today. But recognising what is happening to you is already an enormous step, and you deserve relationships in which you feel safe, respected and free to be yourself. Trust in yourself can be rebuilt, and many people who have been through this manage it, with support and at their own pace. If today you feel the time has come, take a first step: talk to someone, write down what worries you, or book an appointment with a professional. You don't have to go through it alone.

If you want to keep reading, our article on narcissistic relationships may help you. And if you feel you could use professional support, you can see how we approach couples therapy.