Relationship and Partner Problems With Substance Use: When Love Becomes Both a Trigger and a Support for Recovery

Written by the medical team at Day One Rehabilitation Center, Nakhon Nayok, Thailand · Medically reviewed by Dr. Pichayut Kasemphakdeephong (Psychiatrist)

“Every time we fight, he goes out to drink or use.” “He says he uses because being with me is stressful.” “He’s promised to quit so many times, but he always goes back.” These are common patterns in couples where one partner is struggling with substance use, and when it repeats for a long time, both people may start to wonder whether the real problem is the substance or the relationship.

The truth is that both can affect each other. Conflict, feeling rejected, jealousy, loneliness, breakups, or an unstable relationship can become stressors that trigger substance use in some people. At the same time, substance use itself can worsen emotional control, decision-making, responsibility, and trust — making a relationship that already had problems even more complicated.

Some couples get stuck in the same cycle — a fight, the partner using substances goes out to drink or use, then comes back and apologizes and promises to change. Things improve for a while, but when new stress arises, they use again. If this pattern repeats, trying to fix only the relationship without addressing the substance use, or trying to force someone to quit without understanding the emotional and relationship issues, can make any change unstable.

What matters, then, isn’t finding who caused it, but distinguishing which problems come from the relationship, which are related to the substance, and whether there is any underlying mental health issue — so that both addiction treatment and relationship recovery can move in the same direction.

Can Relationship Problems Cause Someone to Turn to Substances?

Relationship problems can be one trigger for substance use, but that doesn’t mean the partner is the cause of someone’s addiction.

Addiction involves many contributing factors — the substance itself, mental health, life experience, environment, peer groups, stress, and each person’s way of managing emotions.

That said, certain events in a relationship can trigger intense feelings, such as:

Fighting or conflict with a partner
Feeling rejected or abandoned
Jealousy or mutual distrust
Feeling lonely even while in a relationship
Problems with money or family responsibilities
Disagreement about the substance use itself
A breakup, separation, or going through a divorce
Communication problems and repeatedly fighting about the same thing
Feeling guilty or feeling responsible for the relationship failing

Some people drink after a fight because they want to stop thinking. Some use cannabis because they want to calm down. Some go back to friends who use substances when they feel their partner doesn’t understand them, while others use immediately after being broken up with because they don’t know how else to cope with the heartbreak.

If the substance temporarily eases the painful feeling, the person may start to learn that every time a relationship problem arises, using is a quick way to escape that feeling.

But once the substance’s effects wear off, the relationship problem hasn’t gone away, and new problems can pile on top — missed plans, disappearing all night, spending more money, lying, or finding it even harder to control emotions.

Treatment therefore needs to help the person face disappointment, anger, loneliness, and conflict without needing to use every single time.

How Does Addiction Damage a Relationship?

Once substance use becomes uncontrolled, the relationship is usually affected by far more than arguments over “will you use or not” — because the substance can reshape trust, roles, and how two people treat each other.

Trust Gradually Erodes

The promise “this time I’ll really quit” may be sincere in the moment, but without treatment, and while the person keeps going back to the same triggers, good intentions alone are often not enough.

As relapse repeats, the other partner may stop believing what’s said, start checking phones, tracking location, calling constantly, asking who they were with, or watching for signs of use.

The relationship gradually shifts from being partners to being someone who has to check up and someone who’s trying to avoid being checked on.

Lost trust can’t be restored with a single apology — it has to be rebuilt through consistent behavior and sustained treatment.

Lying and Concealment Push a Relationship Apart

Some people with an addiction hide how much they’re using, where they go, how much money they spend, or who they meet, out of fear of an argument or being stopped.

When the partner finds out, the conflict is often no longer just about the substance use — it becomes about honesty and trust.

The other partner may then start doubting everything, even at times when the person is telling the truth.

Rebuilding the relationship therefore takes time, and it’s unrealistic to expect everything to go back to normal shortly after stopping the substance.

Money and Responsibility Become a Battleground

Substance use can add expenses, cause missed work, reduce income, create debt, or make it impossible to keep contributing to shared expenses as before.

The other partner may have to take on more responsibility for money, housework, children, or other burdens, leading to feelings of exhaustion and unfairness.

If this repeats, the relationship can become filled with anger, disappointment, and distrust, even if love is still there.

Closeness and Communication Change

When every conversation becomes about the substance, a couple can gradually lose all the other space in their relationship.

Instead of talking about life, work, dreams, or shared interests, conversations may narrow down to “where were you,” “have you used,” “where did the money go,” and “when are you going to quit.”

One partner feels they have to constantly monitor the other, while the other feels perpetually accused. Closeness declines and conflict increases.

Jealousy can occur in any relationship, but if suspicion clearly increases after substance use begins, the effects of the substance should also be considered.

Especially with continued use of yaba or crystal meth combined with sleep deprivation, paranoia can increase. Some people start to believe their partner is being unfaithful, that someone is following them, or that something is being hidden, even without evidence to support it.

If symptoms are severe, psychotic symptoms can occur alongside this, such as hearing voices or holding beliefs that don’t correspond to reality.

In these situations, trying to prove everything or arguing intensely usually doesn’t help the symptoms and can sometimes increase tension.

If a partner has intense paranoia combined with sleep deprivation, continued substance use, hallucinations, confusion, or behavior that puts others at risk, an urgent medical and psychiatric evaluation is needed.

The important thing is not to assume that all jealousy comes from the substance — genuine relationship issues may also exist. Assessment needs to consider both the facts of the relationship and the effects of the substance.

How Should a Partner Help Without Becoming the One Controlling the Person’s Life?

When you love someone and see they’re struggling, it’s understandable to want to help in every way possible. But helping to the point of taking full responsibility for the other person’s life can exhaust a partner and unbalance the relationship.

A partner can support treatment — for example, encouraging the person to see a doctor, helping find information on treatment centers, taking them for an evaluation, providing information to the treatment team, and supporting them in following the treatment plan.

But a partner cannot quit the substance on the other person’s behalf.

Watching the phone around the clock, checking every message, tracking every location, or trying to prevent every possible chance to use can turn a partner, without meaning to, into the controller of the other person’s life — and it’s a burden that’s nearly impossible to sustain over the long term.

What helps more is setting clear boundaries — not giving money to buy the substance, not allowing it to be brought into the house, not helping lie to cover up the consequences of use, and not tolerating behavior that endangers themselves or others in the household.

Boundaries aren’t punishment — they’re a clear statement of what the other person is willing to help with and what they cannot accept.

If the Person Says “I Use Because You Stress Me Out,” How Should You Respond?

This statement can make a partner feel guilty and start weighing every word carefully, afraid that another fight will send the person back to using.

Reducing conflict is a good thing, but a partner shouldn’t be made responsible for the other person’s substance use entirely.

It’s possible to acknowledge the feeling without accepting substance use as the solution — for example, “I understand that fighting stresses you out, and I’m willing to work on how we talk to each other. But I don’t want every problem to end with you using, because it just makes things harder for us.”

A statement like this separates the two issues — the relationship may genuinely have things that need adjusting, and the substance use is a separate problem that needs treatment.

If a partner has to live in fear of “never saying anything that upsets him, or he’ll go use,” the relationship is in an unhealthy pattern and needs help.

Stable recovery requires the person to be able to face stress and conflict without making the people around them responsible for their own relapse.

How Should You Talk to a Partner About Treatment?

The timing of the conversation matters. Don’t start it while the other person is intoxicated, in withdrawal, very angry, or right after a fight.

Choose a relatively calm moment, and speak from what you’ve observed instead of labeling the person.

Instead of saying “You’re an addict and you’re ruining our relationship,” you could say, “Over the past three months, I’ve noticed you’re using more often, you’ve missed work several times, money has been tight, and we fight almost every time after you use. I’m worried, and I’d like you to get evaluated to see where things actually stand right now.”

If the person doesn’t accept that they’re addicted, there’s no need to fight over the word “addicted.” It can start instead from consequences they themselves acknowledge — insomnia, money troubles, problems at work, mood swings, or a relationship that’s struggling.

The goal of the first conversation doesn’t have to be getting the person to accept everything — it can simply be opening the door to an evaluation.

When Must Safety Come Before Working on the Relationship?

Understanding that addiction is a health condition doesn’t mean a partner has to stay in an unsafe situation.

If there are threats, physical violence, property destruction, being confined from leaving the house, driving while intoxicated, severe paranoia, or behavior that puts a partner or others in the household at risk, safety must take priority over trying to work on the relationship.

Don’t try to reason with someone alone while they’re intoxicated, experiencing severe psychotic symptoms, or unable to control their behavior.

If there are thoughts or behaviors of harming oneself or others, severe hallucinations, significant confusion, or dangerous withdrawal, an urgent evaluation is needed.

Creating distance for safety doesn’t mean abandoning the person, and preserving the relationship should never come at the cost of either person’s safety.

When Relationship Problems Co-Occur With Substance Use, Where Should You Start Seeking Help?

If the main problem is the relationship, stress, mood, or mental health, and alcohol, cannabis, or other substances are only used occasionally without a clear pattern of addiction — or if the person isn’t ready for treatment yet and the partner or family wants guidance first — a good place to start is a consultation at Piti Clinic, our outpatient mental-health clinic in Bangkok (Pradiphat Road, Saphan Khwai), to assess mental health and how these issues relate to the substance use, and to help plan communication, set boundaries, and encourage the person into appropriate treatment.

But if use is repeated and uncontrolled — using every time there’s a fight, rejection, loneliness, or stress; needing the substance to manage emotions; increasing in amount or frequency; stopped and relapsed multiple times; withdrawal symptoms; or clear effects on work, finances, and the relationship — then treating the addiction seriously needs to become the priority.

In this case, trying to fix the relationship alone may not be enough, because as long as substance use remains uncontrolled, trust, communication, and the stability of the relationship can keep being damaged again.

Treating Addiction and Restoring Relationships at Day One Rehabilitation Center

For those with a clear addiction whose relationship has been affected, Day One Rehabilitation Center focuses on treating the substance use problem alongside understanding emotional and relationship triggers.

Residential treatment lets the patient step out of the usual cycle for a period, reducing access to the substance and to social groups connected with using, while allowing body and mind to begin recovering in a structured environment.

A psychiatrist can assess whether depression, anxiety disorder, bipolar disorder, ADHD, PTSD, sleep problems, psychotic symptoms, or other psychiatric conditions are present, because these can affect both the substance use and the relationship.

Individual therapy helps the person see their own patterns — for example, going out to use every time they fight with their partner, calling obsessively or reacting emotionally when afraid of being left, or avoiding conversation and using again to escape the guilt from having used.

Once these patterns become visible, new ways of coping with anger, sadness, jealousy, loneliness, and conflict can be practiced without immediately turning to the substance.

During treatment, patients don’t have access to their personal phone; staff coordinate with the family as appropriate. Creating distance from contact that can act as a trigger in the early period helps the patient focus on their own recovery.

Before returning to life together, an important step is preparing a plan for conflicts that may arise again, because leaving the treatment center doesn’t mean the couple will never fight again. The goal is that when they do fight, they can handle it without going back to using, without disappearing from home, and without repeating behaviors that destroy trust.

The relationship after treatment doesn’t have to go back to what it was before the problem started — it can instead build a new pattern with clearer communication, boundaries, and responsibility than before.

Frequently Asked Questions About Relationship Problems and Addiction

Does fighting a lot as a couple cause addiction?

Conflict can be a trigger for substance use in some people, but addiction isn’t caused by the relationship alone. If someone needs to use every single time there’s a fight in order to cope, both their pattern of use and their emotional-management skills should be assessed.

If the person says they use because of us, should we feel guilty?

These are two separate issues. If the relationship has problems that need adjusting, both people can work on them together. But choosing to use substances as a way of coping is a separate problem the person needs help with — a partner shouldn’t be made responsible for all of the substance use.

If I love them enough, will that help them quit?

A partner’s love and support matter, but they can’t replace treatment — especially once addiction has developed. Recovery requires motivation, therapy, treatment of any related mental health condition, and behavior change from the person using the substance themselves.

Should you check their phone or track them constantly?

Distrust after lying or a relapse is understandable, but constant monitoring can turn a partner into someone controlling the other person’s life. Recovery should be built around mutually agreed responsibility and transparency, rather than nonstop surveillance.

If the person relapses after a fight, does that mean we caused it?

That conclusion shouldn’t be drawn. Conflict can be a trigger, but relapse prevention aims to help the person learn to handle triggers without using — a partner can adjust how they communicate, but they can’t take responsibility for the other person’s choice not to use.

Should you break up with someone who has an addiction?

There’s no single answer for every relationship. The decision depends on safety, the severity of the problem, readiness for treatment, each person’s own boundaries, and the impact so far. If there’s behavior that creates danger, safety should come first, and consulting a specialist can help clarify a decision based on facts and one’s own limits.

After quitting, will the relationship immediately go back to how it was?

Not necessarily. Trust can take longer to rebuild than it takes to stop using. The person needs to show change through sustained behavior, while the partner may also need time to recover from the stress and disappointment of the past.

Should couples therapy happen alongside addiction treatment?

In some cases, working on the relationship can be valuable. But if substance use is still uncontrolled, there is severe intoxication, or there’s a safety concern, these need to be stabilized first before considering relationship work as appropriate.

If the person refuses treatment, can the partner consult a specialist first?

Yes. A partner or family member can seek consultation first to help assess the situation, plan how to talk about it, and set appropriate boundaries. There’s no need to wait until the person accepts they have a problem before seeking help.

When should residential addiction treatment be considered?

If use is repeated and uncontrolled, the person has stopped and relapsed multiple times, there are withdrawal symptoms, they depend on the substance every time there’s stress or a relationship problem, their usual environment is full of triggers, or there’s a co-occurring psychiatric condition, residential treatment at Day One Rehabilitation Center is an option that should be seriously considered.

Love Can Support Recovery, But Shouldn’t Mean Carrying Someone Else’s Addiction

A partner can be an important source of support for recovery, but love doesn’t mean accepting every behavior, paying off every debt, covering up the problem, or living in fear that a single wrong word will send the other person back to using.

At the same time, having an addiction doesn’t mean the relationship has no chance of recovering. Trust can gradually be rebuilt if the person enters treatment, takes responsibility for their own behavior, and both people learn new ways of communicating and managing conflict.

It’s important to clearly separate responsibilities: a partner can adjust how they speak, listen, and set boundaries, while the person with the substance use problem needs to learn to handle anger, sadness, loneliness, and disappointment without turning to the substance as a solution.

If every relationship problem becomes a reason to relapse, that’s a sign that treatment needs to go further than just stopping the substance — it needs to help the person build new ways of handling emotions and relationships, because life after treatment will still include disappointment, conflict, and days when the relationship doesn’t go the way they hoped.

The goal of recovery, then, isn’t building a relationship that never fights — it’s making it possible for both people to face problems without falling back into the same cycle of substance use, lying, control, and losing trust all over again.