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AIBU?

Share your dilemmas and get honest opinions from other Mumsnetters.

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To think my sibling is being totally unreasonable about sleeping arrangements on this trip?

1000 replies

jd206 · 12/02/2025 18:45

Posting here for traffic because I need to know if I’m being mad or if my sibling is just being ridiculous.

We (me, DH, DCs, my sibling, and their DP) are going on a family trip soon. It’s been planned for ages, all agreed and booked. We’re staying in a big Airbnb-type place with multiple bedrooms. The plan was that DH and I would have one room, DCs in another, and my sibling and their DP in the third. There’s also a small box room with a single bed, which was just going to be a spare in case anyone needed it.

Now, sibling has suddenly decided that they don’t want to share a room with their DP because “they sleep badly together” (which is apparently news to everyone, including DP!). They’ve said they’ll be taking the box room instead, which means DP will now have to share with one of my DCs (who is 6 and not thrilled at the idea of sharing with an adult they barely know that well).

I told them that’s not fair and that they need to just suck it up and share with their DP as planned. They’re now saying I’m being unreasonable and need to be more flexible, and that the sleeping arrangements aren’t set in stone. But surely you don’t just unilaterally change things like this last minute?!

DM has now waded in and is backing sibling, saying I’m being selfish and that we should “find a compromise” (but what compromise? DH and I aren’t going to split up for the sake of their random issue).

So, AIBU to think my sibling is being totally unfair and should just stick to the original plan? Or am I missing something here?

TL;DR: Sibling suddenly refusing to share with their DP on a trip, wants to take the spare room, leaving their DP to bunk with my child. I’ve said no, now I’m the bad guy. Who’s BU here?

OP posts:
Thread gallery
9
Rewis · 12/02/2025 19:17

All clearing up makes is more confusing.

Why is their Partner sharing with a 6yo if the box room was empty. And why is this making you contemplate separation from your husband?

Also why us the empty room needed just in case? As if they can't share in case there is a plague?

Pebbles16 · 12/02/2025 19:17

@jd206 None of this makes any sense

JimHalpertsWife · 12/02/2025 19:18

How many children do you have OP?

Spirallingdownwards · 12/02/2025 19:18

PandaTime · 12/02/2025 19:16

Maybe DP can't sleep alone and that's why random child has been assigned to cosleep with them seeing as OP and husband refuse to split up. Or something.

Wtf?

Icanttakethisanymore · 12/02/2025 19:18

ClarasSisters · 12/02/2025 19:17

"Worked something out" - what, like using all the available rooms? Hmm

Maybe you should have booked a spare house.

Or two spare houses… so she didn’t have to use the spare house.

Twoshoesnewshoes · 12/02/2025 19:18

I had two pieces of peanut butter on toast and a hot chocolate and it STILL doesn’t make any sense

kiwiandcherries · 12/02/2025 19:18

Where were your sister and her partner sleeping in your plan?

flappingsoles · 12/02/2025 19:18

ClarasSisters · 12/02/2025 19:17

"Worked something out" - what, like using all the available rooms? Hmm

Maybe you should have booked a spare house.

GrinGrinGrin

Mrsknowitall · 12/02/2025 19:18

You are being really awkward and unreasonable the box room is going to be empty so your sister or her dp can stay in there, no need for anyone to bunk with your child

Thisismetooaswell · 12/02/2025 19:18

You're being mad

ValentineValentineV · 12/02/2025 19:18

It’s all very Prince Harry.

BitOutOfPractice · 12/02/2025 19:18

Either it’s been an even longer and more tiring day than I thought, or else this makes absolutely no sense.

Room 1: op and her dp
Room 2: sibling’s dp.
room 3: all the kids
riom 4:,previously spare, now op’s sibling

where has this spare displaced child appeared from? Why has their spot in the kids’ room compromised by the sibling moving to the spare?

Trolleysaregoodforemployment · 12/02/2025 19:18

SlightlyJaded · 12/02/2025 19:12

Batshit
Diagram required for clarification

Edited

This. You are nuts op. No way a 6 year old should be sleeping in a room with an adult they don't know just so there is a spare room.

MonkeyHair · 12/02/2025 19:19

If your sister was ill would she be allowed in the spare room then? Using it for intended purpose?

Srophia34 · 12/02/2025 19:20

No idea what's happening here.
Bedroom 1 - you and DH
Bedroom 2 - your children
Bedroom 3 - sibling or her DH
BEedroom 4 - sibling or her DH

On what planet does the sibling's husband need to bunk in with your children?

No, I wouldn't be happy with that. But I don't understand why that's even on the table?

JimHalpertsWife · 12/02/2025 19:20

Mrsknowitall · 12/02/2025 19:18

You are being really awkward and unreasonable the box room is going to be empty so your sister or her dp can stay in there, no need for anyone to bunk with your child

It's not going to happen though is it - any sane unrelated adult would say

"Of course I'm not sharing with your 6yo Barbara, there's a perfectly good spare room across the hall. It is full if medical supplies and a Nurse but I'm sure we could pop all that in the dining room"

Trolleysaregoodforemployment · 12/02/2025 19:20

ValentineValentineV · 12/02/2025 19:18

It’s all very Prince Harry.

Shouldn't you be on the Royal Family thread with the rest of the vapid and rabid.

Anotherfrozenpizzafortea · 12/02/2025 19:20

Op

How the fuck does this change mean your DC has to share with an unknown adult?

Room 1 you and your dp
Room 2 your dc
Room 3 your sister
Room 4 spare/your sister's dp

At no point have you given ANY reason why your DC have to share with your sister's partner

HomeworkMonitor · 12/02/2025 19:20

jd206 · 12/02/2025 19:11

It’s not about keeping the room empty for no reason, it’s about the fact that the original plan worked for everyone, and now my sibling is unilaterally changing things to suit themselves, which has a knock-on effect on my DC. The box room was always just a spare—not a main bedroom—so there was a reason for it not being assigned.

If they’d said from the start they didn’t want to share with their DP, we could have worked something out. But deciding last minute that their DP has to bunk with my 6yo instead? That’s not fair. Why should my child’s sleeping arrangements be disrupted just because my sibling doesn’t fancy sharing a bed?

Here is the clarification: My educated guess was 100% right. OP hasn't denied she wanted the spare room for her 6yr old and the arrangement she thought worked for all clearly just worked in her favour for her family and sibling not happy

ModernLife1sRubbish · 12/02/2025 19:20

This thread needs to be pulled. I'd planned on doing some work this evening and now I'm totally invested in this. Just getting a cup of tea so I can enjoy it properly.

BitOutOfPractice · 12/02/2025 19:20

I wish I wasn’t doing dry February. I feel a large glass of Sauvignon Blanc would make this make more sense.

SodOffbacktoaibu · 12/02/2025 19:21
Confused Eyes GIF by MOODMAN

Is this a variation of Mornington Crescent ?

Jaichangecentfoisdenom · 12/02/2025 19:21

This makes no sense. The spare "box" room is taken by your sibling, their partner stays in the room assigned to them both; your 6 year old doesn't move from his/her original room. Where's the problem?

SodOffbacktoaibu · 12/02/2025 19:21

BitOutOfPractice · 12/02/2025 19:20

I wish I wasn’t doing dry February. I feel a large glass of Sauvignon Blanc would make this make more sense.

I've had one. It didn't help

SoScarletItWas · 12/02/2025 19:22

Here for the massive back story that shows this was never about a spare room… It’s the only explanation.

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