Why Can’t I Leave Someone Who Hurts Me? Understanding Trauma Bonding
If you keep asking yourself why you cannot leave someone who hurts you, the answer is rarely as simple as weakness, poor judgement or lack of self-respect.
People can become deeply attached to partners who are also a source of fear, criticism, humiliation, unpredictability or control. The relationship may contain real affection, hope, shared history and moments of closeness alongside experiences that leave you confused, anxious or diminished.
That combination can make leaving psychologically difficult, even when part of you knows the relationship is harming you.
The term trauma bonding is often used to describe a powerful attachment that can develop in an abusive or coercive relationship, particularly when periods of harm are mixed with warmth, relief, affection or reconciliation. It is not a formal psychiatric diagnosis, and it should not be used casually to label every painful relationship. However, it can be a useful way of understanding why attachment sometimes becomes stronger rather than weaker in relationships that are unsafe or emotionally destabilising.
What is trauma bonding?
Early work on traumatic bonding described unusually strong emotional attachments that can develop where there is an imbalance of power and where abuse or mistreatment is intermittent rather than constant.
Research on intimate partner violence has also described how cycles of threat, mistreatment, apology, affection and relief can make attachment difficult to break. The pattern is sometimes discussed in terms of intermittent reinforcement, where positive experiences become especially powerful because they are unpredictable.
This does not mean that every relationship involving conflict or inconsistency creates a trauma bond. It is more useful to think about the overall pattern: whether one person is repeatedly harmed, frightened, controlled or destabilised while also remaining emotionally invested in moments when the relationship feels loving or safe.
Research has linked intimate partner violence and coercive control with significant psychological harm, including PTSD and depression. A systematic review and meta-analysis found moderate associations between coercive control and both PTSD and depression. Read the review on coercive control and mental health.
Why leaving can feel much harder than other people expect
From the outside, someone may ask, “Why don’t you just leave?”
That question can miss what is happening psychologically and practically inside the relationship.
A person may be trying to hold several realities at once:
- “They hurt me, but I also love them.”
- “I know this is not healthy, but I still hope it can change.”
- “They can be cruel, but they can also be incredibly loving.”
- “I feel frightened of them, but I also feel frightened of losing them.”
- “I no longer trust my own judgement.”
- “I know what I would tell a friend, but I cannot seem to do it myself.”
A recent review of psychological entrapment in partner abuse describes how abusive dynamics can increase self-doubt, reduce a person’s confidence in their own judgement and make the relationship versus self-preservation decision harder to assess clearly. People may begin to minimise, justify or reinterpret the behaviour simply to make the relationship psychologically bearable.
This is one reason a person can appear to “change their mind” repeatedly about leaving. It may not reflect indecision in the ordinary sense. It can reflect attachment, fear, hope, practical barriers and a gradual erosion of confidence in what they are seeing.
Intermittent kindness can be part of what keeps the bond strong
Relationships that are harmful are not always harmful every minute.
There may be periods of closeness, affection, sex, tenderness, apologies, promises or renewed attention. Sometimes these periods arrive after conflict, withdrawal or cruelty, which can make the relief feel especially powerful.
The nervous system may move from distress to relief, and the return of warmth can feel like proof that the relationship is “back to normal” or that the other person has finally understood.
This is part of what makes the situation so confusing. The positive moments may be genuine experiences. They do not have to be fake in order for the wider relationship pattern to be harmful.
The important question is not whether there are good moments. Most difficult relationships contain some. The more useful question is whether safety, respect and emotional consistency are present across the relationship as a whole.
Why you may keep focusing on the person they could become
Hope can be one of the strongest forces keeping someone attached.
You may remember how they were at the beginning of the relationship, how loving they can be after a rupture, or how vulnerable they seem when they finally open up.
You may understand their childhood, their insecurity, their trauma or the reasons they struggle with closeness. That understanding can make it difficult to hold them accountable for the effect of their behaviour.
Schema Therapy can offer a useful lens here. Work by clinicians such as Wendy T. Behary has explored narcissistic and high-conflict relationship patterns through schemas, unmet needs, coping modes, empathy and limit setting. Understanding why someone behaves as they do can sometimes increase clarity. It should not be used to excuse repeated cruelty, coercion or abuse.
Empathy for another person’s history and protection of your own boundaries are not opposites.
You can understand someone and still decide that their behaviour is harmful.
You can care about why they developed their patterns and still decide you cannot keep living inside them.
If familiar relationship patterns seem unusually powerful, you may also find my article on schema chemistry in relationships useful. Schema chemistry and trauma bonding are not the same thing, but both can help explain why insight alone does not always weaken an attachment.
Your body may be telling you something before your mind can explain it
Sometimes people say that they cannot point to one dramatic event, yet they rarely feel settled around their partner.
You may notice that you:
- tighten your shoulders or jaw when they come into the room
- feel your stomach drop when their tone changes
- monitor their face or mood closely
- rehearse conversations before raising an issue
- feel exhausted after spending time together
- struggle to sleep after conflict
- feel relief when they leave the house
- become unusually quiet, compliant or watchful around them
Those reactions do not prove that a partner is abusive or narcissistic. Anxiety, previous trauma and many other factors can affect bodily responses.
However, the reactions are still information worth noticing.
Interoception is the process of sensing and interpreting signals from inside the body. Research on trauma and PTSD suggests that interoceptive processing is closely related to emotion regulation, threat learning and bodily vigilance. Trauma can be associated with both heightened and blunted responses to internal signals. Read the review on interoceptive awareness and PTSD.
A useful question is not “Does my body prove this person is dangerous?”
A more grounded question is:
“What happens inside me consistently when I am around this person, and what might that be telling me about how safe, free and settled I feel in the relationship?”
You can love someone and still notice that your body rarely relaxes around them. Both can be true.
Childhood experiences can influence what feels familiar
Not everyone who stays in a harmful relationship has a history of childhood trauma, and childhood experiences should never be used to blame someone for being abused.
However, early relationships can shape expectations about closeness, conflict, abandonment, criticism and emotional availability.
If you grew up needing to monitor a parent’s mood, work hard for approval, tolerate emotional inconsistency or suppress your own needs, similar patterns in adulthood may initially feel familiar rather than immediately recognisable as unhealthy.
This is one reason therapy may explore both the current relationship and earlier experiences. The aim is not to search for a childhood explanation for everything. It is to understand why certain dynamics may feel compelling, frightening or difficult to step away from.
You can read more about how trauma can affect relationships and attachment-informed EMDR.
Why self-doubt becomes such a powerful part of the problem
Psychological abuse can gradually change how a person evaluates their own experience.
If concerns are repeatedly dismissed, mocked, reversed or blamed on you, you may start asking:
- “Am I too sensitive?”
- “Did I misunderstand?”
- “Was it really that bad?”
- “Maybe I caused it.”
- “Perhaps I am the abusive one.”
- “What if nobody else believes me?”
Current research on psychological partner abuse increasingly recognises covert tactics such as information control, concealment and gaslighting-related behaviours as important parts of the picture.
Self-doubt can make separation harder because leaving usually requires trusting your own judgement at exactly the point when that trust has been weakened.
Why do I go back after leaving?
Returning does not mean that the relationship was not harmful.
People return for many reasons, including attachment, fear, loneliness, financial dependence, children, housing, practical barriers, hope for change, pressure from the other person and the emotional shock of separation itself.
When the relationship has been intense, separation can also trigger powerful grief and longing. The absence of the relationship may initially feel worse than being inside it, even when the relationship was harmful.
It can help to separate two questions:
“Do I miss this person?”
and
“Was this relationship safe and healthy for me?”
The answer to the first can be yes while the answer to the second is no.
How therapy can help with a trauma bond
Therapy should not tell you what decision to make about a relationship unless there is an immediate safeguarding issue that requires clear action.
It can help you recover enough clarity to make decisions from a stronger position.
This may involve:
- understanding patterns of coercion, intermittent reinforcement and emotional dependency
- rebuilding trust in your own perceptions
- working with shame, guilt and self-blame
- understanding attachment and relationship patterns without blaming yourself
- processing traumatic experiences where appropriate
- learning to recognise what safety and consistency feel like
- strengthening boundaries and your sense of agency
If traumatic experiences from the relationship continue to feel emotionally present, approaches such as EMDR therapy may sometimes be useful following assessment. Where the trauma is complex or difficult to access directly, work may also draw on Deep Brain Reorienting, Brainspotting, Internal Family Systems-informed work or Schema Therapy.
The aim is not to force you to stop caring about someone. It is to help reduce the fear, confusion and learned responses that can make it difficult to see the relationship clearly and act in line with your own needs.
If you are still in the relationship
You do not have to decide everything at once in order to seek support.
If there is controlling or abusive behaviour, specialist domestic abuse support can help you think about safety and options without pressuring you to make a particular decision.
The UK Government’s domestic abuse support guidance lists national services. If you are in immediate danger, call 999.
If you are trying to understand whether what you are experiencing may be emotional abuse, read Signs of Emotional Abuse: How to Know If Your Relationship Is Emotionally Abusive.
A final thought
Still feeling attached to someone who has hurt you does not mean you wanted the harm, caused it or secretly believe it was acceptable.
Attachment does not disappear simply because a relationship becomes unhealthy.
Understanding the bond can be an important part of recovering your ability to choose what happens next.
If a difficult or abusive relationship is still affecting how you feel, trust or respond, you can learn more about Relationship Trauma Therapy for Individuals, explore my broader trauma therapy work, or book a free 15-minute consultation.
