Many survivors of narcissistic abuse are confounded by the addiction they feel to the narcissist, long after the abusive relationship took a toll on their physical, mental and emotional well-being. Make no mistake: recovery from an abusive relationship can be very similar to withdrawal from drug addiction due to the biochemical bonds we may develop with our toxic ex-partners.

Understanding why we are addicted permits us recognize that our addiction is not about the merits of the narcissist, but rather the nature and severity of the trauma we’ve experienced. It enables us to detach and move forward with powerful knowledge that can propel us towards greater agency and healthier relationships than the ones we’ve experienced in the past. In addition, it challenges the victim-blaming discourse in society that prevents many abuse survivors from gaining support and validation for the traumas they’ve experienced -– validation that would actually help, not hinder, these survivors in leaving their abusive relationships.

Survivors struggle with No Contact and may suffer many relapses on the road to recovery from the psychological trauma of the relationship. Aside from the reasons I’ve proposed in this blog post on why abuse survivors stay in abusive relationships, I thought I’d explore how our own brain chemistry can lock us into this addiction to the narcissist or sociopathic partner. Some of these same biochemical bonds also make it difficult for us to detach from non-narcissistic partners as well.

1. Oxytocin.

This hormone, known famously as the “cuddle” or “love hormone,” is released during touching, orgasm and sexual intercourse; it promotes attachment and trust. It is the same hormone released by the hypothalamus that enables bonding between mother and child. During “love-bombing” and mirroring in the idealization phases with our abusive partners, it’s likely that our bond to them is quite strong as a result of this hormone. Intermittent reinforcement of positive behaviors dispersed throughout the abuse cycle (e.g. gifts, flowers, compliments, sex) ensures that we still release oxytocin even after experiencing incidents of abuse.

I’ve heard from many survivors who reminisce about the great sexual relationship they had with the narcissist, containing an electrifying sexual chemistry they feel unable to achieve with future partners. This is because charming emotional predators such as narcissists are able to mirror our deepest sexual and emotional desires, which leads to a strong sexual bond, which then, of course, releases oxytocin, and promotes even more trust and attachment. Meanwhile, the narcissist, who is usually devoid of empathy and does not form these types of close attachments, is able to move onto his or her next source of supply without much thought or remorse.

The addictive nature of oxytocin is also gendered according to Susan Kuchinskas, author of the book, The Chemistry of Connection: How the Oxytocin Response Can Help You Find Trust, Intimacy and Love. The unfortunate fact is that estrogen promotes the effects of oxytocin bonding whereas testosterone discourages it. This makes it more difficult for females in any type of relationship to detach from the bond as quickly as men.

2. Dopamine.

The same neurotransmitter that is responsible for cocaine addiction is the same one responsible for addiction to dangerous romantic partners. According to Harvard Health, both drugs and intense, pleasurable memories trigger dopamine and create reward circuits in the brain, essentially telling the brain to “do it again.”

Dr. Helen Fisher discovered that this“frustration-attraction” experience of obstacles in a romantic relationship actually elevates feelings of love rather than eradicating them. In fact, she noted that the brain is activated in a similar way when we are in adversity-ridden relationships as they are in cocaine addicts. Toxic love is, quite literally, like a drug addiction.

Do you remember recalling the pleasurable, beautiful first moments with your narcissistic partner? The romantic dates, the sweet compliments and praise, the incredible sex – long after you two had broken up? Yeah – it’s releasing the dopamine in your brain that’s telling you to “do it again.”

The salience theory of dopamine suggests that our brain releases dopamine not just for pleasurable events but to important ones that are linked to survival. As Samantha Smithstein, Psy.d notes in “Dopamine: Why It’s So Hard to Just Say No,” dopamine doesn’t just tell the brain what feels good, it tells the brain that the brain should continue to engage in the activity in order to survive.

Abuse survivors are unfortunately hijacked by dopamine. Abusive tactics like intermittent reinforcement works well with our dopamine system, because studies show that dopamine flows more readily when the rewards are given out on unpredictable schedule rather than predictably after conditioned cues.

So the random sweet nothings whispered to us after an incident of emotional abuse, the apologies, the pity ploys, the rare displays of tenderness during the devaluation phase, right before another incident of abuse – actually help cement this type of reward circuit rather than deter it. Combine this with powerful experiences of abuse which alert our brain to “pay attention” as well as pleasurable memories we recollect over and over again – and we’ve got ourselves a biochemical bond from hell.

3. Cortisol, Adrenaline and Norepinephrine.

Cortisol is a stress hormone, and boy, does it get released during the traumatic highs and lows of an abusive relationship. It is released by the adrenal glands in response to fear as part of the “fight or flight” mechanism. As cortisol, adrenaline and norepinephrine all get released in response to a perceived threat (such as the one posed by a toxic narcissist), our stress hormone system goes into overdrive and our focus on whatever has triggered that stress sharpens as a way to counteract the threat.

In addition, cortisol and oxytocin work-together to consolidate and reconsolidate fear-based memories in a way that is even more powerful and vivid than other memories. This is why our brains tend to become overly fixated on toxic people and can’t stop thinking about them.

Since we are unlikely to have a physical outlet of release when cortisol is triggered during cycles of emotional abuse, this often traps the stress within our bodies instead. As we ruminate over incidents of abuse, increased levels of cortisol lead to more and more health problems. Christopher Bergland suggests numerous ways to counteract the effects of this hormone, which include physical activity, mindfulness, meditation, laughter, music and social connectivity.

Adrenaline and norepinephrine also prepare our body for the flight or fight response, and are also culprits in biochemical reactions to our abusers. Adrenaline promotes an antidepressant effect, triggering fear and anxiety which then releases dopamine – this can cause us to become “adrenaline junkies,” addicted to the rush of vacillating between bonding and betrayal. During No Contact from a narcissistic partner, withdrawal from that “rush” can be incredibly painful.

4. Serotonin.

Serotonin is a hormone that regulates mood; it can also help to manage obsessive thinking. When we fall in love, the serotonin levels in our body fall in a way that mimics the way they are shown to be lowered in some individuals with Obsessive Compulsive Disorder. Individuals with low levels of serotonin are more likely to engage in sexual behavior which then again releases dopamine and oxytocin. As you can see, the biochemicals involved all interact with each other to contribute to this vicious cycle.

This is why narcissistic abusers can dominate our brains in the early idealization phases of the relationship with their love-bombing, the excessive adoration we receive in the beginning. Imagine how this effect is compounded in the devaluation and discard phases, when, we are made to think about our narcissistic partner 24/7 due to their covert put-downs, their silent treatments, their stonewalling, their infidelity, and their sudden disappearances. We become obsessed with them not just through love, but again, through fear, through anxiety and rumination.

5. Trauma bonding.

All of these jolts of fear and anxiety in the face of danger can reenact past traumas and create trauma bonding. Trauma bonding occurs after intense, emotional experiences with our abusers and tethers us to them, creating subconscious patterns of attachment that are very difficult to detach from. It is part of the phenomenon known as Stockholm Syndrome, in which victims of hostage become attached to their perpetrators and even defend their captors.

Although survivors of narcissistic abuse come from many different backgrounds and anyone can be a victim of narcissistic abuse, trauma bonding is even more significant for those who grow up in violent or emotionally abusive homes, and/or have had a narcissistic parent in addition to their most recent experiences with trauma and abuse.

Survivors of multiple incidents of abuse by various narcissistic individuals can further reinforce subconscious wounds they experienced in childhood in the trauma bond with their current abusers. If there has been victimization in the past, such as the experience of having to survive in an abusive household, this can lead to trauma repetition or reenactment, the root of which Gary Reece, Ph.D in his article, “The Trauma Bond,” calls “relational trauma.”

For more information on trauma bonding, please see The Betrayal Bond: Breaking Free of Exploitative Relationships by Patrick Carnes.

It is important to understand the various types of biochemical and psychological bonds that often create attachments between abusers and their victims. Better understanding these bonds enables us to move past victim-blaming and move forward into greater understanding, compassion and support for survivors who struggle with leaving abusive relationships. We must not judge but continue to empower ourselves and others with this newfound knowledge.

A version of this article first appeared on my blog, Self-Care Haven in April 2015 and is an excerpt from a copyrighted book, Becoming the Narcissist’s Nightmare. It has also been featured on Elephant Journal, MOGUL and The Mind’s Journal.