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AIBU?

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BIL hijacking dinner

107 replies

OneBlueOnePink · 29/10/2025 08:00

Last night we invited my SIL (DH sister), her husband, their two adult DC, my BIL (DH brother), his wife, and their twin boys (6) for dinner this weekend.

DH and I have two DS (16) and (9).

We usually see BIL and his family twice a year, once at SIL house and once at our house. We are never invited to their house.

BIL’s twins turned 6 last week and they had a large birthday party with their friends to which we were not invited (not expecting an invitation and not upset about this). BIL had not arranged anything for his family to celebrate the birthday (again fine and not expecting this).

BIL has now said he will bring a birthday cake to dinner to celebrate his twins.

AIBU to be annoyed about this? We will be hosting everyone (DH is a very good cook and will be preparing everything) but it’s not meant to be a birthday gathering for BIL twins?

It was also my DS’s 9th birthday 2 weeks ago too, but we had not meant for this to be a party for him either.

DH has told BIL not to bring a cake as I had a planned to make one (I bake as a hobby and SIL likes one cake in particular which I had planned to make for her).

But I’m concerned now that BIL will use my cake as a birthday cake for his twins and we will all end up doing what he wanted anyway.

DH says it’s not a big deal and to just let BIL get on with it.

I think I may be being unreasonable because I’m still a bit miffed about what happened a couple of years ago. We all met at SIL for dinner two days after my DS’s 7th birthday. It was over a week before the twins birthday but closer to my DS’s. BIL did the same thing again and produced a cake for his twins while ignoring our DS.

So, AIBU and if not, what can I do to stop BIL?

OP posts:
SalmonOnFinnCrisp · 29/10/2025 08:15

The easiest solution is to stop arranging get togethers near the twins birthdays or just invite SIL and family (who you seem to like and have a reciprocal relationship with)

In terms of this event. I would be considering "having norovirus" and rescheduling for sometime in Dec or Jan - let SIL and BIL work it out themselves.

If you want to go ahead.... prempt it and on arrival loudly announce you have made a birthday cake for your son and rhe twins (just your son is petty)
Then I'd make 2 smaller cakes (one for twins and one for son) you can eat the twins cake for dessert and then give SIL one to take away.

Firefly100 · 29/10/2025 08:09

Personally I’d suck this one up (but make sure your 9 yo is included in the belated birthday wishes if BIL does it). Then I would think ahead going forwards and not organise a get together anywhere around his family’s birthdays.
Given he never invites you, I’d also be tempted to organise some extra activities with just SIL’s family at times.

B1anche · 29/10/2025 08:08

If it's just a cake then does it matter? Have your normal gathering plus 10 mins max singing happy birthday and eating cake.

My DP has a big family and if a gathering is near a birthday someone might bring a cake. It's never occurred to me to be upset about it.

thepariscrimefiles · 29/10/2025 08:08

Why do you keep inviting people who never invite you?

Your BIL had a birthday party for his twins and he could have invited your family to celebrate, but he didn't. He doesn't get to use your dinner party as another birthday celebration for his children.

HangryBlueCritic · 29/10/2025 08:07

Make your own cake as planned and dedicate it to your own DS before he can do the same?

Long term just stop attending or inviting to dinners so close to your children’s birthdays in future to avoid the same thing happening.

TurtleCavalryIsSeriousShit · 29/10/2025 08:04

Or.. if he does produce a cake for his twins, let him finish the happy birthday song, then pop some candles on your cake for your DS and sing for him.

MellowPinkDeer · 29/10/2025 08:02

‘They’ve already had a party and a cake, let’s keep this to the family gathering we had planned’ thanks and bye.

just say no op.