One of the best parts of my job is the learning, conversations and reflection I get to do in supervision and with colleagues. I just love learning and then sharing ideas that might be of help for all of us going through the same things.

Today a concept came up in supervision about the idea of a marriage or relationship being about 2 become 1. Now, if you grew up in the 90s, naturally the first thing you will start doing is singing Spice Girls 2 Become 1 upon hearing that…no…just me?? Okay, well let’s get back to focusing…

2 Become 1 is a somewhat antiquated notion in marriage that suggests that we form into one being of the same ideas, experiences and ways of being. It often comes up in conflicts, that one person must be right, and the other wrong.

But what if this idea, as romantic as it sounds, is actually one of the things sneakily working against you?

The “two become one” ideal is deeply embedded in how we think about love.

Total togetherness sounds intimate. It sounds safe. If we are one, then surely we are secure.

But here is where it gets complicated. If two people truly merge into one, then any difference between them becomes a threat. Your reality contradicts mine, which means one of us must be wrong. A different opinion stops being just a different opinion. It becomes evidence that something has gone wrong in the relationship.

This is the trap. What feels like closeness is actually a setup for conflict, because difference is inevitable. You will always be two people. And when the ideal says you should be one, every moment of separateness starts to feel like a failure or a betrayal.

Here is a question worth sitting with: what anxiety is “two become one” trying to resolve?

One answer is the anxiety of separateness.

If we truly love each other and we are still two separate people, then some genuinely frightening things remain true. You could leave. You could stop choosing me. You have an inner world I cannot fully access. You might want things I cannot give you. You might see things differently to me and I cannot make you see it my way.

That is uncomfortable. Separateness means vulnerability. It means love is always, in some sense, a risk.

“Two become one” is a fantasy solution to that anxiety. If we merge completely, you cannot leave, because there is no longer a “you” separate from “us.” If we think identically, I never have to sit with the discomfort of your different reality.

But here is the catch. The more merged a couple becomes, the more sensitive any difference feels. A night out with friends, a different opinion, even a private thought can start to feel threatening. The "two become one" solution creates the very fragility it was trying to prevent.

What about facts?

If two people can have different ideas or experiences of an event, and they're both true, what about facts?

A fair question here is: what about things that are simply true? If two people witness a car accident, the crash still happened. Facts are facts.

There are objective facts (the crash occurred, the car was red, the light was green) that can in theory be verified externally. And then there are subjective experiences of those facts: how frightening it was, who was at fault, what it meant, what should happen next. These are always filtered through our individual perceptions, histories and nervous systems.

Most couples are not actually fighting about objective facts. They are fighting about meaning, intention and emotional experience. “You forgot our anniversary” might be a fact. “You do not care about me” is an interpretation. That is where two different realities are operating simultaneously, and both can be valid.

The move is learning to separate the what happened from the what it meant to me. Both matter. But they are very different conversations.

So what do we do?

The alternative to 2 become 1 is called differentiation. It is a concept developed most significantly by therapist and author David Schnarch.

Differentiation means developing a strong enough sense of self that you can stay connected to your partner even when there is difference, disagreement or distance between you. It means you do not need your partner to agree with you, validate you or think the same way you do in order to feel okay within yourself.

Here is the potentially confusing part: differentiation is not the opposite of closeness. It is actually what makes real closeness possible.

Think about what genuine intimacy requires. It requires being truly known by another person. But if you have dissolved yourself into the relationship, there is no longer a “you” to be known. Your partner is in a relationship with a mirror. They cannot miss you, cannot be surprised by you, cannot discover you, cannot really choose you. There is nothing distinct enough to reach toward.

Think of it like two trees. If they grow so entwined that their roots and branches fully merge, neither can grow properly. But if they each develop strong, deep root systems, they can lean toward each other, provide shelter for each other, and weather storms together without either one collapsing. The togetherness is real. And so is each tree.

Why we get so upset when someone disagrees with us

Our beliefs and perceptions are not just opinions. They are how we make sense of reality. When someone contradicts our version of events, it is not simply “you are wrong about what happened.” At a deeper level it feels like “your entire way of perceiving the world is unreliable.” That touches something very raw.

In close relationships, disagreement can also activate the attachment system. If my partner sees it differently to me, some part of my nervous system reads that as “I am alone in this.” And disconnection in an attachment relationship feels like danger.

There is also the need to be a reliable witness to our own experience. If someone we love tells us our perception is wrong, we face an impossible choice: trust myself, or trust them. For people with histories of invalidation or gaslighting, this is especially activating. The fight to be believed is sometimes a fight to exist.

This is why conflict escalates so fast and feels so personal. Often the argument is not really about who forgot to book the restaurant. It is about: do I matter, am I real, can I trust my own mind?

How to work with our differences

Knowing that two subjective realities can coexist is one thing. Sitting across from your partner in the middle of a heated argument and actually living that out is another. This is where the Gottman Method offers something really practical.

One of the core skills in Gottman couples work is learning to be a genuine listener before anything else. Not listening to rebut, not half listening while formulating your defence, but truly listening to understand your partner’s inner world.

In conflict specifically, this looks like slowing the conversation right down and taking turns. One person shares their subjective experience of what happened: what they felt, what they needed, what meaning they made of it. The other person’s only job in that moment is to listen and reflect back what they heard, without correcting, defending or explaining. Then you swap. This is not a natural thing to do in conflict. It goes against every instinct. But it is extraordinarily powerful, because it communicates something the nervous system desperately needs to hear: your experience is real, and it matters to me.

This is also where validation comes in, and it is worth being clear about what validation is not. Validating your partner’s reality does not mean agreeing with them. It does not mean conceding that you were wrong. It means saying, in effect: given who you are and what you have been through, I can understand why you experienced it that way. Two people can validate each other’s realities and still see the situation differently. That is actually the goal.

Once both people feel genuinely heard, something shifts. The nervous system settles. The attachment panic quietens. And from that calmer place, compromise becomes genuinely possible in a way it simply is not when both people are still fighting to have their reality acknowledged.

This is the difference between conflict that erodes a relationship and conflict that, handled well, can actually deepen it.

The goal is not to eliminate the tension of being two separate people. It is to build enough security and trust that separateness no longer feels like danger.

That is what a secure attachment offers. Not “I know you will never leave” but “I trust that you keep choosing me, and I keep choosing you, and that choice means something precisely because we are both free.”

So instead of “one of us must be right,” what becomes possible is: we are two different people who had two different experiences of the same moment, and both are real. That is not relativism. It is not giving up on truth. It is making room for the full humanity of the person sitting across from you.

And honestly? That is a much more interesting relationship to be in.

Michelle Janssen is a couples counsellor and the founder of Brisbane Couples Counselling. She works with couples across Brisbane and via telehealth Australia-wide, specialising in affair recovery, conflict and communication, and life stage transitions. She is a PACFA Clinical Member and Gottman Method practitioner.