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AIBU?

Share your dilemmas and get honest opinions from other Mumsnetters.

If you’re an only child would you marry an only child or prefer to marry someone who has siblings?

120 replies

PurpleDisco · 30/05/2026 12:12

A friend currently has this dilemma and due to a recent chat which was full of angst it has made me think. Due to having 4 siblings myself I never thought about how only children become only adults eventually. She’s luckily always had good friends. As a child during the school holidays she felt lonely due to living rurally. She’d sometimes go to sleepovers though and always felt sad leaving as they all had big families with brothers and sisters to play / fight with. This feeling has stayed with her through life and she always swore that when she settled down it would have to be with a man who has siblings. Both her parents are only children so she never had aunties, uncles or first cousins while growing up. She wanted and still does want aunties, uncles and cousins for her children as she feels she definitely missed out on a big part of life because of her ‘unusual’ family in her eyes. Tbh I don’t know anyone else who doesn’t have at least one aunt or uncle so is it unusual? She’s got fabulous parents who adore her btw.

I do feel sorry for her but she’s 34 now and has met the love of her life who is also an only with a similar childhood but he doesn’t feel as strongly as her about the whole thing. He’s happy and doesn’t feel he’s missed out on life growing up and points out not all families are big and happy where everyone loves being with each other. They both want children but she’s reluctant to go ahead with anything because of this big issue. Everything is perfect apart from this and there’s no guarantee she’d meet someone half as perfect if she ends the relationship. Do people really think about this in such detail or could she have been suffering from depression for so many years and not realised it?

All thoughts / feedback would be appreciated. Anyone in this type of relationship with kids and are happy and content?

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Kinekia · 04/06/2026 16:26

It’s a shame for your friend but she’d be mad to give up on a bloke she loves over this. Big close happy families are much rarer than you’d think.

I have 3 siblings but don’t have the stereotypical close sibling relationship with any of them. Two of them are half siblings and are
17 and 20 years older than me. We grew up in
different households and despite living not far away they just have never been fussed about a relationship with me. We see each other on dad’s birthday and that’s it. My niece and nephew who are a similar age to me have their own lives and we don’t keep in touch.

My full sibling has autism and is non-verbal. So even though I wasn’t an only child, I still had those feelings of loneliness.

My partner has 2 siblings - one lives in America and he hasn’t seen her for 15 years and the other lives in Europe and we see her every 2-3 years. They do video chat and keep each other updated on their lives but realistically our kids won’t have a close cousin relationship. We’re having a big family holiday in Mexico with the 3 siblings and partner’s mum next year but due to expense this will happen once in a blue moon - I’m talking every 5 years or so if that.

We do find it sad sometimes and we feel it especially in the summer when we have nobody our age to invite round for BBQs or for big birthdays but we’re having our own baby now and are hopeful that we can build up a social network through that.

Your friend should stick with this bloke and crack on with having children with him. They could have a lovely family unit. If she’s 34 I fear she may let this bloke go and take years to find someone else and then not be able to conceive (or only be able to conceive one child) and given how strongly she feels about family ties I think that would be absolutely devastating and soul destroying for her, especially if he went on to have a family with someone else.

Rufus27 · 04/06/2026 15:43

My mum and dad were both only children (and my mum was orphaned before I was born) so I grew up with no aunts, uncles nor cousins and only had one set of grandparents. When I met DP, it genuinely never crossed my mind to consider whether he had siblings. My parents had close friends and good neighbours who in many ways were like aunts and uncles to me. The only time I ever felt disadvantaged was when I was a child and noticed how friends, due to having larger families, had a much greater pile of Easter eggs than I ever had!

As it happens, after twenty years with DP I can see there are many advantages to having (my) tiny family who are very close compared to (his)massive family who seem to be forever bickering and rarely actually see each other.

outerspacepotato · 04/06/2026 15:32

Siblings and large extended family was not any kind of criteria for me, much less make or break.

Your "friend" has a very idealistic picture of having lots of extended family and likely unrealistic and very romanticized. She seems to think a large extended family means built in friends and companions and a social life so she doesn't have to do any of the work involved in having that, she just slots in. Same with her kids.

She doesn't get that many families are not what she envisions. Families are much more transient than they used to be. People move for work all the time. What if one of the siblings dies or becomes disabled? Or they don't like her? Or the cousins and her kids hate each other? Or in the best case, she's still going to have to put in the work she doesn't want to?

She sounds like she's got issues and nothing will ever be good enough for her.

SurleyTurnip · 04/06/2026 14:52

I am one of 4 and DH is one of 3. Due to various circumstances my kids never had a multitude of Aunties/ Uncles/cousins. They have one Aunt they see infrequently and haven’t seen a cousin in over 15 years. Coming from a large family is no guarantee that there will be lots of people around. As far as I am aware neither DC (now adult) particularly care.

Utopiaqueen · 04/06/2026 14:45

I get a lack of family can feel lonely for some and some of feel the lack of connection. But most of us have situations or scenarios in our life that haven't panned out how we want or have the life we envisioned.

She's met the love of her life and from the sounds of it, someone that treats her well and surely that's worth more than any number of future siblings in laws.
There's absolutely no guarantee she will meet someone who has siblings they are close with or would want to play the doting auntie and uncle.

Adding my story in that I have two siblings who have chosen to have no part in my children's lives. Yes I wish it was different but I choose to spend my energy and time in relationships that nurture and benefit me and my children. I refuse to feel guilty or sad about it.

Likewise my mum and dad used to be very close to my dad's brother and his kids until he became a raging alcoholic in his late 40s. Life throws all sets of curve balls and your friend is in for a lifetime of disappointment if she isn't flexible on the rigid conditions she's set on a future partner.

LondonMum2026 · 04/06/2026 10:53

My DH is not at all close to his DB so we don't see much of him and his child. I'm close to my sibling so my kids do get to see their cousins but whether they will be close as adults I'm not sure.

Also depends how sociable the DH would be - mine is v anti-social so has little to no friends and in all the years since having children he hasn't made one friend locally - that is probably more of an issue for me than the fact I married someone with a brother!

Followthesunshine · 04/06/2026 10:42

Hopefully your friend does end this relationship so he can find someone who truly loves him. Such a ridiculous reason to consider leaving someone she claims to love.

Skybluepinky · 04/06/2026 10:38

I’d marry someone who I loved who was kind to me.

mindutopia · 04/06/2026 10:36

It wouldn’t make any difference to me. 🤷🏻‍♀️ I’m an only child and literally this never even crossed my mind. I married Dh because I love him. I’m not shagging BIL, who lives 9 hours away, and we see him twice a year. BIL and SIL are childfree so no other children in the family, no cousins anyway. Just because family exist doesn’t mean you’ll live near them or want to be around them or have any relationship with them whatsoever. I’m completely NC with my family and we aren’t hugely close to dh’s family either. Only thing that matters is us and our dc because that’s our family.

Fwiw, growing up as an only child, I never felt lonely, never wished I had siblings. As an adult now, I definitely am very grateful I don’t have any (my family is a shitshow, no one else entered into that chaos would make the situation any better for anyone). Literally have never once had the thought that I wish I wasn’t an only child. It was great. I had a lot more opportunities as a result, even with my dysfunctional family. I had loads of people around me to support me and lots of friends and just life was never lacking. I’m pretty sure neither of my dc would say they are grateful that the other exists! 😂

MrsShawnHatosy · 04/06/2026 10:27

Hiddeninthetrees · 30/05/2026 12:17

It wouldn't factor into my choice of husband at all.

Nor mine. DH is an only and I have one sibling, but I never gave his lack of siblings a second thought.

Peonies12 · 04/06/2026 10:24

So she's considering leaving a partner she loves because he has no siblings? That is bonkers to me. I really wouldn't consider it a factor if the relationship was good otherwise. it's more important they are aligned on whether they want children, and an idea if they want 1 or more. But of course that can't be decided before you experience having 1 child.

Hmmmmwineandchocs · 04/06/2026 10:15

Wouldn’t make any difference to me. I have an uncle I’ve never met and an aunt i haven’t seen in about 20 years, same for cousins.
Just because you have them doesn’t mean you’ll be close.

damemaggiescurledupperlip · 04/06/2026 10:11

My mum and dad came from large families. I have masses of cousins on my side but only see one, the one I have loads in common with .

I was one of 4. my kids have two First cousins on my side but see them only at Xmas and Easter and funerals due to distance

my hisband was an only. he had two cousins he saw a lot of growing up but doesn’t keep in touch now. They have nothing in common.

We Have loads of good friends and so do our kids - I think the people you choose will always be closer to you than the people you ‘inherit’, with the exception perhaps of siblings

I know that when our respective parents were old and inform, it was a great help and comfort to have siblings to help with the load and also to share and understand one’s grief at their death.

gannett · 04/06/2026 10:08

It's never once occurred to me that the amount of siblings someone has would be a factor in wanting to be in a relationship with them. In fact I would say it's completely irrelevant. The nature of their relationship with whatever family they do have is much more important as it's a dynamic I'd be becoming part of.

I don't know anyone for whom being an only child (or not) is an important part of their identity. Literally only ever come across this level of discourse and over-thinking about it on MN. It also has zero correlation to how lonely someone can be as an adult.

mamajong · 04/06/2026 10:04

This would not factor into my choice at all ngl

EmeraldShamrock000 · 04/06/2026 10:02

As Adults, cousin relationships are less important. I could live without my cousins.
I am very close with my siblings, and their children. I hope the children stay close as we have a mix of 1 or 2 children, no big families.

NowhereToSleep · 04/06/2026 09:27

I have a whole pile of cousins. I don’t see any of them and very much doubt they see one another except at funerals!

Chilly80 · 04/06/2026 08:02

He can't be the love of her life it that stops her marrying him.
I'm an only child and it never crossed my mind.
I do however have loads of cousins.
My husband has a brother but less family overall than me.
We never see my family and his very rarely.

Doggoneoutforapeeagain · 04/06/2026 07:58

Criteria for lifelong partnership, is just like the fairy tales - ‘tall, dark. handsome, siblings’

naaaaaahhhhh

you chose your partner based on compatibility, shared experiences, love, shared values and dreams.

what family they have or don’t have is not a factor in my decision making.

I would be very worried if someone really was obsessed about their potential partners family - as chances are their magical thinking about how big extended families work compared to the reality could be a massive shock and a big disappointment to them.

You pick a partner - not a surrogate family.

looking at all the mil posts and other family posts on mumsnet - it seems that most extended families are pretty dysfunctional and problematic .

i’d focus on having a strong partnership so you can face the world together including their extended family!

FloorWipes · 04/06/2026 07:56

I think your friend basically needs quite a long course of therapy to deal with a lot of deep seated issues that probably, at their core, have little to do with not having siblings.

CheddarBiscuit · 04/06/2026 07:53

Most people don't think about it.

My sibling and I lived together until we were about 10 and sometimes we got on, other times we didn't. As a teen I didn't see much of my sibling and as adults we are fundamentally different people.

I wasn't lonely as a teen and I'm a happy adult. Tbh the only loneliness I feel is knowing I have a sibling I don't have a relationship with so in some ways I think that's a lot worse but you can't pick your family. I think I'd feel more whole/peaceful if my sibling had never existed rather than being out there and it being so sadly irreconcilable.

Better to have friends that support you than family that tears you down.

My husband is one of four and they all get along but don't see much of eachother as they all live away.

it's a different time to how we gre up where due to step siblings there was always loads of fun to he had.

But no, I wouldnt even consider not being with the person I love because of their lack of siblings.

People nowadays love the idea of community but are totally shut down to it. Growing up we always had a neighbour at the table or someone dropping in after work or kids moving freely between houses all day at the weekend. If mumsnet posters are to be believed, you need to make an appointment six weeks in advance and provide your full dietary needs so you can be properly performatively hosted at.

sittingonabeach · 04/06/2026 07:50

@CrocsNotDocs a friend from school was one of 3 siblings, none of them ended up having DC, having 3 is no guarantee there will be many cousins etc. 2 of them also didn't really speak to each other either, so it wasn't like they all got to together either.

Also people move away, so many people rely on friends for their social life not family.

I don't I know anyone with an only child that cries for a sibling. I also think there may be a few children who would rather not have the sibling they have!

EmeraldShamrock000 · 04/06/2026 07:44

It would be an issue for me if I was an only child. I’m not, my children are very close to their cousins, I was very close to mine. I’d imagine that it is still unusual to have no cousins, it’ll be more normal in the future.

TorroFerney · 04/06/2026 07:41

I’m an only married to an only and we have one child. I only ever think of it when I see posts on here asking about it.

My parents had siblings but my family are a bit scummy though so I do see it through that lense - have loads of cousins but none I’d want to see or have my child interact with. My parents also had an awful marriage so I suppose relatives aren’t a positive thing for me! Friends are a lot better.

Geckolocation · 04/06/2026 07:05

Your friend may have a lifetime romantic vision she’s up against and should explore that in therapy- guy to marry or no guy- because it’s not a given even if she does marry into a big family. Families can be great or awful and often an uneven mix of both.

I worry about the need to actively make clear boundaries and teach onlies about friend and ‘family’ relationships. I think the reverse of what your friend is looking for is often true. People who are onlies might be drawn to a person with siblings because the only person
feels like there’s something really great about having a wider family.

But in my experience you really are marrying a whole family, that’s something to really think about if you don’t have competing family ties coming in on your own side. You can get drawn into the big family orbit as an only and it’s unlikely that you’ll all see eye to eye on everything. Meaning you can become the satellite to your partner’s strong relationship with their family and if the family are not nice or they are very demanding of your family’s time or both, you have a big partner loyalty and time problem that can affect you and your DC.

Of course this could apply to anyone marrying someone with very close ties to their own family tbh- or for example marrying someone with close family ties abroad for example and then they want to move the whole family over to their country like it or not.

I guess I am saying maybe it’s better as an only to marry an only and maybe it’s better as someone with siblings to marry someone else with siblings as a means to even out the end result for the partner and for the future kids. But in any case it’s about being discerning about who you are giving your time to , developing your self knowledge so you know your own weak spots and blind spots, can see those in others. It’s about having the confidence to have boundaries around someone else’s family. For anyone.

Oh and it’s fine to be an only who has an only as long as you really actively make family by choice and by example to your kids. You have to be,more, not less, sociable and discerning about people you want around and what they are really like, if you’re an only or you have an only child. But that’s a wonderful power for life that you probably don’t get to develop or need to develop as much, if you have a big family that you our happy to hang around with for your life. Big family life is a lot of work and honestly can get incredibly complicated, I don’t think the grass is so much greener there. Good luck to your friend whatever they decide.

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