When Love Turns Lethal: Psychology of Intimate Partner Violence

By Dr. Pankaj B. Borade, MD (Psychiatry) — Consultant Psychiatrist, Mind Matters Clinic, Pune

Every so often, a crime emerges that disturbs us not because of its brutality alone, but because of where it came from — a relationship that was supposed to mean love, partnership, and a shared future. When a person is harmed by the very partner they trusted most, we are forced to confront an uncomfortable question: how does intimacy curdle into violence?

As a psychiatrist who has spent years sitting with both the perpetrators and survivors of relational harm, I want to be clear at the outset: understanding is not the same as excusing. Explaining the psychology behind intimate partner violence does not soften the moral weight of the act. It does, however, help us recognise the warning signs earlier — sometimes early enough to prevent a tragedy.

"Understanding is not the same as excusing"

This article explores what happens in the mind when love becomes lethal, why premeditated relational crime is psychologically distinct from impulsive violence, and what families can watch for.

What We Mean by Intimate Partner Violence

Intimate partner violence (IPV) is any pattern of behaviour used by one partner to gain or maintain power and control over another. We often imagine it as physical assault, but IPV is broader. It includes coercive control, emotional manipulation, financial domination, surveillance, isolation from friends and family, and — at its most extreme — homicidal planning.

The World Health Organization estimates that nearly one in three women worldwide has experienced intimate partner violence in her lifetime. Men are affected too, often underreporting due to stigma. IPV is not confined to any class, religion, or education level. It happens in slums and in penthouses, among the illiterate and among postgraduates.

What makes IPV uniquely dangerous is the closeness it exploits. The person causing harm has intimate knowledge of their victim’s fears, routines, vulnerabilities, and trust. That intimacy becomes a weapon.

"The person causing harm has intimate knowledge of their victim’s fears. That intimacy becomes a weapon."

The Psychology of the Person Who Plans Harm

Not all violence is the same. Forensic psychiatry draws an important distinction between reactive (affective) violence and instrumental (predatory) violence.

Reactive violence is the heat-of-the-moment explosion — a slap during a furious argument, a shove fuelled by rage. It is impulsive, emotionally flooded, and often followed by genuine remorse.

Instrumental violence is colder. It is planned, goal-directed, and emotionally detached. The person calculates, rehearses, and waits for opportunity. When a relational crime involves multiple attempts, careful timing, or staging an “accident,” we are firmly in instrumental territory — and that profile is psychologically far more concerning.

Several psychological features tend to cluster in those capable of premeditated relational harm:

Moral disengagement.

This is the mental machinery that allows a person to commit acts they would otherwise find unthinkable. They reframe the victim as an obstacle rather than a human being, minimise the consequences, and displace responsibility. The psychologist Albert Bandura described how ordinary people can switch off their own moral compass through these cognitive manoeuvres.

Compartmentalization.

Perhaps the most chilling feature is the ability to hold two contradictory realities side by side — to harm someone and then publicly mourn them, to grieve in performance while feeling little internally. This splitting is seen in individuals with antisocial and narcissistic personality structures, where the self that acts and the self that presents to the world are kept in separate sealed rooms.

Pathological possessiveness.

Some relational crimes are rooted not in hatred but in a distorted sense of ownership. When a partner is viewed as property — and a perceived rival or obstacle threatens that possession — the disturbed mind may conclude that removal is the solution. This is attachment gone catastrophically wrong.

When Two People Plan Together

A particularly disturbing pattern emerges when two individuals jointly plan harm against a third. Psychiatry has a name for the dynamic that can develop between two closely bonded people: folie à deux, or shared psychopathology.

In these pairings there is usually a dominant partner who supplies the conviction and a more dependent partner who is drawn into the shared belief system. Isolated from outside reality-checks, the two reinforce each other’s distorted thinking until an idea that either alone might have rejected becomes a shared plan. The relationship itself becomes an echo chamber where consequences fade and the goal becomes everything.

"The relationship itself becomes an echo chamber where consequences fade and the goal becomes everything."

This is why investigators often find that joint relational crimes were not the impulse of a single disturbed mind, but the product of a closed two-person world that lost contact with conscience.

The Brain Behind the Decision

It would be incomplete to discuss this without acknowledging neurodevelopment. The human prefrontal cortex — the seat of impulse control, consequence assessment, empathy regulation, and long-term planning — does not fully mature until roughly the age of twenty-five.

In young adults, the emotional and reward-driven parts of the brain can outpace the regulatory ones. This does not make anyone a criminal, and the overwhelming majority of young people never harm anyone. But in a mind already carrying personality vulnerabilities, toxic relational dynamics, or distorted thinking, this developmental gap can lower the threshold between a dark thought and a catastrophic act.

In forensic settings this is a recognised consideration during assessment — not as an excuse, but as part of understanding how a young person arrived at the unthinkable.

The Red Flags Families Miss

Tragedies of this kind rarely arrive without warning. In hindsight, the signs are often visible. The difficulty is that we are culturally conditioned to read some of these signs as signs of love.

No single sign is proof of danger. But clusters of these patterns, escalating over time, deserve serious attention rather than rationalisation.

What This Means for All of Us

The point of examining these dark cases is not voyeurism. It is prevention. Every clinically informed citizen who can recognise coercive control, who understands that obsessive jealousy is not romance, and who knows that isolation is a danger signal — that person becomes a node of protection in their family and community.

If you recognise these patterns in your own relationship or in someone you love, please take them seriously. Reach out to a mental health professional, a trusted family member, or a domestic violence helpline. Leaving a controlling relationship is often the most dangerous moment, and it should be planned with support, not attempted alone in a crisis.

"Healthy love expands a person — it adds friendships, freedom, and growth. Love that shrinks you, monitors you, isolates you, and frightens you is not love at all, whatever name it is given."

As a society, we owe it to ourselves to teach our young people what secure, respectful attachment actually looks like — so that they can recognise its absence before, and not after, the worst has happened.

A Note on Seeking Help

If you or someone you know is experiencing intimate partner violence or struggling with overwhelming emotions in a relationship, support is available. At Mind Matters Clinic, Pune, we offer confidential, compassionate assessment and care for individuals and couples navigating difficult relational dynamics.

This article is for educational purposes and does not constitute individual medical or psychological advice. It does not reference, and should not be read as commentary upon, any specific ongoing legal proceeding.