Trust and Jealousy
The invisible architecture of every relationship

Trust is the word that comes up in every relationship and every couples therapy session — and yet hardly anyone truly understands the concept. "We need to rebuild trust" — but how, and why? And what if that trust was precisely what was betrayed? Trusting the other person blindly again would simply be reckless. Or would it?

Jealousy, on the other hand, is seen as a weakness, a toxic feeling that has no place in a relationship. "You're just jealous" — this phrase comes up frequently in arguments. "No I'm not" is usually the swift retort.

Let's take a closer look at both feelings. Anyone who truly wants to understand trust and jealousy must grasp this: they are not opposites, but two sides of the same coin.

Trust is not a feeling but a repeated experience

Many couples come to therapy saying: "I don't trust him/her anymore." Behind this lies the idea that trust is a state one either has or loses. In fact, trust is accumulated experiential knowledge. It says: my partner is reliably there in the small moments. They say what they mean. They do what they say. They think of me even when I'm not there.

The degree of trust is referred to in psychology as the "Trust Metric." A mathematical model with several components. The crucial point: trust does not arise in moments of wedding vows or promises ("I will never cheat on you"), but in thousands of small micro-decisions. What builds trust: coming home on time when you've promised to. Asking how things went when your partner had a difficult appointment. Putting your partner's needs above your own desire for comfort sometimes. Trust is the sum of these moments. That is why, after a breach, it can only be painstakingly rebuilt by creating new such moments — not through words.

Jealousy is a symptom, not the problem

Here it gets uncomfortable: jealousy is almost never what it presents itself as. When someone says "I get jealous when my partner goes out with colleagues," they actually mean something quite different. Usually it comes down to one of three things. It is important to distinguish between them:

1) Unresolved trauma: Someone who experienced unreliable or disappearing attachment figures as a child has a highly sensitive alarm system for impending loss. The system fires even when there is objectively no danger. This jealousy usually has little to do with the current partner. It stems from the past.

2) Lack of self-worth. Someone who deep down believes they are unlovable cannot understand why anyone would stay with them. Every other person in their partner's life thus becomes a threat — not because that person is more attractive or better, but because one experiences oneself as inadequate.

3) Real relationship deficits. Sometimes jealousy is an early-warning system for what isn't working properly. When the emotional connection fades, when a partner withdraws or keeps secrets, jealousy is an appropriate response to a real change. Pathologising it would be a mistake.

The therapeutic question is therefore never "How do you get rid of your jealousy?" but: "What is your jealousy trying to tell you?"

The myth of "blind trust"

Relationship guides often suggest that healthy trust means believing everything, questioning nothing, giving your partner complete freedom. But that is not trust — it is an avoidant engagement with reality. Real trust is not naive. It means: I have good reason to believe that my partner does not want to hurt me, because they have shown me this time and again. But they are not perfect, and I trust that they too make mistakes. Yet I trust myself and us to work through those mistakes with openness.

Having trust does not therefore mean never asking difficult questions or telling each other uncomfortable truths. Couples who have developed truly deep trust are distinguished by the fact that they share uncomfortable truths with each other. "I found someone attractive at the party." "I'm going through a difficult phase and sometimes think about my ex." Such things are hard to say. It would be easy to pretend otherwise. Sharing uncomfortable truths is not the end of a relationship — it is proof of trust. Trust does not grow by blocking out reality. Learning to come to terms with an uncomfortable reality is inner growth. That is the outcome of honest communication. One small caveat though: there is still a need for sensitivity as to whether every single uncomfortable truth really needs to be thrust under someone's nose.

After a breach of trust: why forgiveness is not enough

Infidelity, a discovered lie, a broken promise. When trust has been shattered, most couples reach for the same strategy: talk it out, forgive, move on. But in 80 per cent of cases, this fails. Why? Because a genuine breach of trust is a traumatic event with all kinds of neurobiological consequences. The betrayed partner experiences symptoms resembling post-traumatic stress disorder: flashbacks, hypervigilance, intrusive thoughts. This cannot simply be "forgiven," because it is not primarily a moral but a physical reaction.

What genuinely helps is a three-step process that researcher Shirley Glass calls "Atone, Attune, Attach": atonement (complete transparency, taking responsibility without justifications, answering all questions — even the painful ones, even for the hundredth time), attuning (understanding together which cracks in the relationship allowed the breach to occur, so the foundation can be repaired) and attaching (building a new, more conscious relationship — not restoring the old one). Whoever skips one of these steps is building trust on sand.

Sexuality as an early-warning system

As a couples and sex therapist, I observe time and again: trust problems often show up first in the bedroom. Long before someone consciously thinks "I don't trust you anymore," their body closes itself off to the other person. Desire fades, touch becomes more mechanical, intimacy feels like an effort. This is no coincidence: sexuality demands vulnerability — and vulnerability demands trust. Someone who does not feel safe cannot open up.

A fulfilling sexuality is the result of a relationship in which both partners feel seen, accepted and safe. When sexuality suffers in a relationship, it is rarely about the question "What are we doing wrong in bed?" — it is almost always: "Where did we stop trusting each other?"

The paradox of jealousy: sometimes it is a gift of love

There is a form of jealousy that has disappeared from the modern relationship debate and which I consider valuable: jealousy as a conscious expression of how much this person matters to me. Specifically as the following admission: "I could lose you, and that would be unbearable." In relationships where no jealousy whatsoever exists, that is often not a sign of maturity but of indifference. The question is not whether jealousy exists, but what we do with it. It can turn us into controlling tyrants — or into attentive lovers who do not take their partner for granted.

The uncomfortable truth about trust

In the end, every deeper engagement with trust leads to an insight that many prefer to suppress: trust includes risk. There is no guarantee that the person I open myself to will not hurt me. Whoever insists on absolute certainty will never truly be able to love. Whoever can never be hurt can never truly be connected. The task in a relationship is not to eliminate the risk, but to take it consciously. With eyes open, with honest communication, with the willingness to choose each other again and again — and with SELF-trust that one can come through another crisis inwardly intact.

Trust is not a precondition of love. It is love's practice. Jealousy is not a weakness. It is a message. Whoever takes both seriously — rather than fighting them or glossing over them — finds access to their relationship that no technique and no guide can replace. The most beautiful experience in a long partnership is not never having been hurt. It is knowing: we hurt each other, and we chose to keep showing up for each other.