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AIBU?

Share your dilemmas and get honest opinions from other Mumsnetters.

To ask if you have half siblings

85 replies

Vibted7777 · 17/01/2026 15:42

And do you have a relationship with them

OP posts:
Stardust286 · 17/01/2026 22:58

Yes one on my dad's side but our dad rarely had us both on the same day so didn't have a close relationship. Have spoken on social media but that's as far as it's gone

Vibted7777 · 17/01/2026 22:55

Perplexin · 17/01/2026 17:20

1 Older half brother - we have a relationship.

1 younger half sister - no relationship at all. I've never met her. Shes reached out but I dont have any interest in meeting or talking to her.

What made you not want to talk to her

OP posts:
OurChristmasMiracle · 17/01/2026 18:19

One half brother I’ve never met and didn’t know about until after both parents died and one full sister who I’ve been no contact with since my mums death over 12 years ago

Fidgety31 · 17/01/2026 18:17

No never met them. I think there’s 3 or 4 of them maybe. Don even know their names

Mrsm010918 · 17/01/2026 18:14

I've got 3 but they're all 11+ years older than me so we didn't really grow up together. I'd say I get on well with one when we're together but not what I consider close. one I don't speak to at all, no falling puts just not my kind of person. And the last I do check in with weekly primarily because they have SEN but again not what I consider close.
I am close with my younger brother, there's 3 years difference between us

RitaIncognita · 17/01/2026 18:05

badboss2020 · 17/01/2026 17:17

Does it make a difference if it’s the mum that’s shared rather than the dad?

kids tend to live with their mums so I see a lot of half siblings with the same mum who are very close but who aren’t close to the dads other children.

Possibly, but my two half-siblings are from my dad, and we are close. I did spend quite a bit of time with my dad (and them) growing up, though.

Coffeeishot · 17/01/2026 18:01

I do yes, a half sister who is a bit younger, we get on fine no issues apart from age gap we don't have much in commpn and a half brother who i was told about but have never met.

WhiteRose222 · 17/01/2026 17:56

I have three. Get on well with two of them. Never shared a home with them due to gap between us and I think that has impacted the relationships (positive and negative).

Two treat my like full siblings. One doesn’t and hasn’t really ever shown interest.

NewYearNewJob2024 · 17/01/2026 17:53

Yes, but have never called her my 'half' sister...she's my sister and we're very close.

Nevermind17 · 17/01/2026 17:51

I was discussing this with my DS recently. He said that he’s noticed amongst his friends with half siblings that where the mother is the common parent, they’re as close as full siblings; but where the father is the common parent they’re not close.

Reab8 · 17/01/2026 17:51

Have 1 older half sister from my Dad's side. Didn't get to properly know her until teens, her Mum didnt let her have a relationship with us, but my Dad was likely shit on his part too. I feel sorry for her - its obviously affected her, she has lots of issues. I get on with her with when I do see her, even though we are very different people. Always call her 'sister'.

FiveGoMadInDorset · 17/01/2026 17:47

6
5 I grew up with from my fathers first marriage all get on well
1 I have never met, he was born between first and second marriage

PissedOffNeighbour22 · 17/01/2026 17:47

My half brother was born when I was 15. He’s in his mid 20s now. Don’t see him often but he sends me a lot of cat videos 😄

edited to say we didn’t grow up in the same household but me and my brother saw our half brother every weekend when my dad had access visits.

BlueWalker · 17/01/2026 17:45

One brother. He lives abroad but we're still pretty close. Three half-sisters. I've never met them but I was nearly 30 when the eldest of them was born, plus I'm NC with their/my dad and have been for decades. I don't want to push a relationship and have no idea what they've been told about me so I'm there if they want to contact me and if not, I get it. 2 of the 3 have friended me on social media, so some communication lines are open. But it has to be their decision, I think. Especially at their age, when they're still finding out who they are regardless of a weird family situation.

Theda13 · 17/01/2026 17:44

cadburyegg · 17/01/2026 17:31

Yes, I could have written this.

I made the effort for years to try and have a relationship with them but they just aren’t interested. A few things happened which made me decide not to bother anymore. So we haven’t spoken in a few years now.

Same here. I idolised them growing up and in recent years I’ve invited them to my house for dinner, and tried to make plans with them. They aren’t interested, so I don’t bother anymore.

Sorry to hear that. It’s an awful feeling, isn’t it?

spindrifft · 17/01/2026 17:44

I'm close to the ones I grew up in the same house as, and not to the ones I saw only occasionally.

Wrennie24 · 17/01/2026 17:43

Two younger half siblings that I didn’t grow up with, met them when I was 16 after no contact with father for that time. Get on with them but more like cousins. They are closer to each other and I am closer to my older full brother as we grew up together in the same house.

BettysRoasties · 17/01/2026 17:42

badboss2020 · 17/01/2026 17:17

Does it make a difference if it’s the mum that’s shared rather than the dad?

kids tend to live with their mums so I see a lot of half siblings with the same mum who are very close but who aren’t close to the dads other children.

I think it makes a huge difference if you grow up in the sand house and without a huge age gap.

Age gap matters even in full biological families if you’ve moved out and mum and dad have a new baby you’re never going to have the same bond as if you grew together.

cadburyegg · 17/01/2026 17:31

Theda13 · 17/01/2026 17:12

Yes. I have two older half siblings. They’re very close with each other, but not close with me, unfortunately. I wish things were different though.

Yes, I could have written this.

I made the effort for years to try and have a relationship with them but they just aren’t interested. A few things happened which made me decide not to bother anymore. So we haven’t spoken in a few years now.

Perplexin · 17/01/2026 17:20

1 Older half brother - we have a relationship.

1 younger half sister - no relationship at all. I've never met her. Shes reached out but I dont have any interest in meeting or talking to her.

badboss2020 · 17/01/2026 17:17

Does it make a difference if it’s the mum that’s shared rather than the dad?

kids tend to live with their mums so I see a lot of half siblings with the same mum who are very close but who aren’t close to the dads other children.

LindorDoubleChoc · 17/01/2026 17:17

I have 3 - a sister and two brothers. They are 15 to 21 years younger than me. Same Dad, different Mum. I have hardly anything to do with them now that my Dad is dead and my step Mum told me he'd written me out of his will and any estate will be left to her children only. It's a shame - I'm very fond of my half sister but not her family!

GentleSheep · 17/01/2026 17:15

Yes, found out about them about a decade ago (in my late 50s). No relationship with them, complicated due to NC with father.

Ohhhthedrama · 17/01/2026 17:14

I have 2 brothers and a sister. We have the same mum different dad's. We all grew up together so even though technically we are halfs I just think of them as my siblings. Close with all of them even though we live in different countries. We have an active group chat and visit as much as we can. I flew long hall last year to attend their dad's funeral.

Theda13 · 17/01/2026 17:12

Yes. I have two older half siblings. They’re very close with each other, but not close with me, unfortunately. I wish things were different though.

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