The irreplaceable bond of a shared childhood
There are very few people in your life who knew you before you became yourself. Before work, relationships, children, successes, failures, reinventions and the accumulated experiences of adult life. Before you had a professional identity or knew what you thought about the world. Before you had the language to explain your childhood or the perspective to understand what was happening inside your family.
My brother is one of those people for me. I am the middle child. Our older brother is nine years older, so he was raised pretty much as an only child before my younger brother and I arrived, disrupting his idyllic childhood with only eleven months between us. This means that for one month every year my younger brother and I are technically the same age, something that has amused me for as long as I can remember.
We grew up side by side, close enough in age that very little childhood territory belongs exclusively to either of us. When I spend time with my brother now, I am not simply spending time with someone I love. I am spending time with someone who carries an enormous part of my history. Something about that is profoundly reassuring.
Why can spending time with a sibling feel so different?
A long sibling relationship contains a lifetime of shared experiences.
Your sibling may remember the house you lived in, the atmosphere around the dinner table, the peculiar family rules nobody ever explicitly stated and the things that could or could not safely be said.
They remember relatives who have gone and family stories before decades of retelling polished them. They may remember you as a child in ways you cannot remember yourself. Most importantly, they experienced the family from their own position inside it.
That doesn’t mean siblings remember childhood the same way. Far from it. Two children can grow up under the same roof and have surprisingly different experiences of their parents and family life. But a shared landscape still exists. My brother and I know the landscape. We don’t need to describe the terrain to one another before starting a conversation.
The person who can reality-check your childhood
One of the most valuable things about my relationship with my brother is his role as a reality-checker in our family dynamic.
As adults, we constantly reinterpret our childhoods. We understand things at 40, 50, 60, or 70 that we couldn’t understand when we were seven or eight. Sometimes that brings compassion, sometimes it brings anger. Sometimes something confusing for decades suddenly makes sense.
And sometimes you find yourself wondering whether something really was as you remember it. This is particularly relevant when childhood involved a parent who could be casually unkind. Casual unkindness can be difficult to explain later because it doesn’t necessarily produce one dramatic incident around which you can build a neat story. Instead, criticism, comparisons, dismissals or emotional coldness may have been delivered almost in passing.
To the adult delivering them, they may have seemed inconsequential. To a child, they may have been anything but. Children are exquisitely sensitive to the emotional climate around them because they depend upon the adults creating it. A parent’s expression, tone of voice or withdrawal of warmth can therefore carry considerably more weight than the parent realises.
When that behaviour is inconsistent, a child can become very skilled at reading the emotional weather. You may grow up highly alert to tone or impatience. You may become very good at anticipating other people’s reactions. You may minimise your needs or instinctively check the emotional temperature of a room before deciding how much of yourself it is safe to bring into it. None of this requires a uniformly terrible childhood. Families are more complicated than that. Parents can love their children and still be unkind. They can provide for them and still fail them emotionally. They can be funny, interesting, generous or capable in some areas and damaging in others.
Understanding the impact of childhood doesn’t require turning a parent into a monster. It requires acknowledging what happened. That is where my brother can be invaluable. I remember things about our mother and our family dynamic that he remembers too. I don’t need to persuade him. He was there.
Why can shared sibling memories be so grounding?
Memory is not CCTV footage. Human beings reconstruct memories, and siblings will often disagree about events, their sequence or their significance. But there is a difference between remembering every detail identically and recognising a family’s emotional truth. Sometimes you find yourself asking: Was she really like that? Did that happen? Was that how it felt? With my brother, the answer sometimes comes without much discussion because he already knows exactly what I mean.
That isn’t about endlessly prosecuting the past or two adult siblings building a case against a parent. It is about having another witness. Someone else heard the tone. Someone else understood the rules. Someone else learned their own way of navigating them. That can be enormously grounding. The extraordinary safety of being completely known What strikes me particularly when I spend time with my brother is how safe I feel with him.
Completely safe. That is a surprisingly rare experience. Even in good adult relationships, there are usually elements of negotiation. We read the other person and adjust ourselves accordingly. We decide what to explain, what context they need and how something might be received. With someone who has known you for almost your entire life, much of that scaffolding disappears. My brother knows me, and I know him.
I can read his impatience. I can see his patience too. I know his humour and the way he sees absurdity in things. I know how deeply he loves his family. And I know about his completely mad love for his dog, and all the dogs he has shared his life with. These aren’t biographical facts I have learned about him. I know them through decades of observation.
Knowing someone for a lifetime also means knowing their contradictions. The impatient person can show extraordinary patience. The person making everyone laugh can also be fiercely serious about the people he loves. The adult standing in front of you contains versions of the child, teenager, young adult, parent and older person you have known. We see one another in layers.
What does emotional safety actually feel like?
Emotional safety is not simply the absence of threat. It is the experience of not needing to monitor yourself constantly. When you feel safe with someone, your nervous system does not have to work as hard.
You don’t need to predict every response. You are less concerned about being misunderstood. Silence does not necessarily require filling. Disagreement doesn’t automatically threaten the relationship. You know that irritation will pass. You know affection exists underneath it. That knowledge isn’t created by somebody telling you that you are safe with them. It is built through experience. Years of it. Decades of it.
There may have been arguments, competition, irritation and periods when your lives moved in completely different directions. Yet underneath it all can be an extraordinary continuity. You remain brother and sister.
Siblings witness who we used to be. I think this becomes increasingly significant as we get older. The number of people who knew our earliest lives gradually decreases. Grandparents go. Aunts and uncles go. Eventually parents die. Family homes are sold. Familiar streets change. Objects that once seemed permanent are dispersed between households or thrown away. The physical evidence of childhood gradually disappears.
But your sibling remembers. My brother and I can refer to experiences with a few words because the rest doesn’t need explaining. We know the cast of characters. We know who was difficult. We know who was funny.
We know the stories told so often that we could probably both supply the punchline. That is more than nostalgia. It provides continuity between who we were and who we have become.
A therapist can help you understand childhood patterns. A partner can listen and empathise. A friend may know your family stories extremely well. But none of them was actually standing there. A sibling was.
Shared childhood does not mean identical childhood
Of course, siblings don’t really have identical parents. Not psychologically. Parents change between children. Circumstances change. Expectations change. Birth order and temperament matter. A parent may identify strongly with one child and clash repeatedly with another. My brother and I were born only eleven months apart, yet we still occupied different positions in our family. He was my younger brother. I was his older sister.
The important thing isn’t that we agree on every interpretation of our childhood. It is that we share enough understanding that neither of us has to pretend.
Why can sibling relationships become more important as we age? When we are young, siblings can feel almost compulsory. They are there because the family has put everyone in the same house. Then adulthood pulls people into separate lives. Careers, marriages, children, geography and responsibilities take over. The relationship becomes voluntary. You no longer spend time together because your parents bundled everyone into the same car. You choose it.
Later still, something else happens. You become increasingly conscious of time. A sibling relationship that once seemed as though it would simply exist forever becomes recognisably finite. That doesn’t have to make it melancholy. It can make it more valuable.
Much of adult life also involves performing different roles. We are somebody’s partner, parent, grandparent, colleague, therapist, friend or neighbour. Those roles are genuine parts of us, but with my brother I am also simply his sister. The one who arrived eleven months before him and who, for one month every year, gets to be the same age as him. There is something wonderfully levelling about that. He knew me before any of my other identities existed. And I knew him.
The unique relationship between adult siblings
Perhaps we underestimate sibling relationships because they are difficult to categorise.Romantic relationships are endlessly discussed. Parenting is endlessly discussed. Friendship is increasingly recognised as important to our wellbeing. Adult sibling relationships can sit more quietly in the background, even though they may be among the longest relationships of our lives. A brother or sister can be family, friend, historian, irritant, ally, witness and reality checker at the same time. They can remind you where you came from without requiring you to remain there. They can know your history without reducing you to it. That isn’t the same as unconditional approval.
My brother can certainly have opinions. So can I. It is something more robust than approval. It is belonging.
Why spending time with my brother matters to me
When I spend time with my brother, I feel the presence of all those years without having to talk about them. Our childhood is there. Our mother is there, in a sense, including the difficult parts and the consequences of her casual unkindness. The people we were are there. The lives we have subsequently built are there too.
I can observe his impatience and know it immediately. I can watch him being patient and recognise that too. I see his humour, his devotion to his family and the frankly ridiculous amount of love directed towards Mamba, his current dog.
And underneath all of it is the extraordinary safety of being with someone who has known me for almost as long as I have known myself. There is no substitute for that. A friend you meet later in life can become profoundly important. A partner may know your adult self more intimately than anyone. Children and grandchildren create entirely new forms of love.
But none of those relationships can recreate a shared childhood. They weren’t standing beside you. My brother was.
Some relationships cannot be replaced
As a therapist, I spend a great deal of time thinking about relationships, emotional patterns and how our earliest experiences continue to influence adult life. But not everything valuable needs to be analysed into oblivion. Sometimes the important thing is simply to notice what we have. Spending time with my brother reminds me that family isn’t only about what happened to us. It can also be about who was there with us. Who remembers. Who can laugh about some of it now. Who can confirm the parts that weren’t funny. And who, after all those years, remains recognisably themselves.
For me, my brother is one of those people. He is part of my history, but he isn’t confined to my past. He is my reality checker, my fellow witness and one of the people with whom I feel most completely safe. And still, for one month every year, despite my insistence on being the eldest, he manages to catch me up. For that month we are the same age again. Perhaps that tiny accident of timing says something about us. We have spent almost our entire lives travelling through time alongside one another. Not having the same experience. Not always seeing things in the same way. But knowing where we came from. And knowing that the other one was there. That is a unique relationship. And an irreplaceable one.
