Milestone birthdays mean a lot to many people.

Would you consider changing the date of a milestone birthday celebration to accommodate a guest, or would you celebrate on the day the birthday girl wants to celebrate?

This man was organizing a small celebration for his wife’s 40th birthday, but apparently, his sister-in-law had her own plans that day.

So she asked him to move the date of the party he was planning.

Tensions quickly arose when his wife got involved with the scheduling.

Check out the full story below.

AITA – For telling my sis-in-law that we dont have to accommodate to her plans

Tomorrow is my wife’s 40th birthday.

I started planning the birthday last week.

We usually don’t do big parties as it is only a few of us — 11 in total, so I sent my original message to everyone.

This man told his wife that her birthday celebration would be on Saturday, not on her actual birthday.

But my oldest sister-in-law told me that she had tickets already purchased for the same day her birthday is. She asked if we could celebrate on Saturday.

I started to give her a piece of my mind, telling her she forgot her birthday and bugging her about it.

Today, I told my wife that we had everything ready for Saturday, and she didn’t like the idea. She expressed that it is her 40th and that she wanted to have it on her actual day.

He told her the reason why he had to move it.

I knew this was going to happen because she always likes to have her birthday on her actual day, and this being her big 40, of course.

So I told her her oldest sister already had plans and that she had asked if we could move it.

That was even worse, because her oldest sister always wants everyone to accommodate her needs.

But his wife preferred to celebrate her birthday on the actual date.

So my wife said we are celebrating tomorrow, and if she can’t be there, oh well.

I communicated the change of plans.

And my sister-in-law went, as usual, explosive mad and blamed me for late planning.

She stated that she had purchased the tickets back in May.

He argued with her sister-in-law, telling her they don’t need to accommodate her plans.

I was like, I am not planning my wife’s birthday since April or earlier.

You have known her birthday is on the 18th of July her whole life.

But she thinks she needs to rule the world and whatever she says has to be done no matter what.

So I told my sister-in-law we don’t have to accommodate her plans.

She left the group chat.

His wife should get to celebrate her birthday on her actual birthday if she wants to. He shouldn’t have agreed to celebrate on another day when he knew his wife would be upset about it. His sister-in-law sounds pretty selfish.

Let’s check out the comments of other people on Reddit to this story.

This person shares their honest opinion.

Here’s another thoughtful insight.

You should be doing it in advance, says this person.

Uh oh! People are calling him out.

Finally, short and straightforward.

You can’t please everyone, especially when someone thinks the world should revolve around them.

If you liked that post, check out this story about a guy who was forced to sleep on the couch at his wife’s family’s house, so he went to a hotel instead.