Respect and boundaries are essential in any relationship.

Would you be upset if your boyfriend invited someone to stay at your apartment without asking you if it was okay first?

This woman recently moved in with her boyfriend.

When his sister needed a place to crash, he didn’t check with her before saying she could stay with them.

She’s pretty upset about this, but her boyfriend thinks she’s being selfish.

Whose side are you on? Read the full story below.

AITA for refusing to let my boyfriend’s sister stay with us after how she treated me?

I (18F) have been dating my boyfriend (20M) for three years.

We recently moved in together into a small apartment that I pay the majority of the rent for.

He pays utilities and groceries.

The issue is with his sister (22F), who has never liked me.

This woman noticed how her boyfriend’s sister is rude to her.

From day one, she’s made it clear she doesn’t want to talk to me.

She ignores me when I say hi and acts like I don’t exist when I’m around.

My boyfriend says it’s just her anxiety and not personal.

But after three years of this, I’m not buying it. She’s friendly with everyone else, just not me.

She felt uncomfortable letting his sister stay in their apartment.

Recently, she got into a fight with her roommate and needs a place to crash.

My boyfriend immediately offered our place without asking me first.

I told him I wasn’t comfortable having her stay here, especially after how she’s treated me.

Now, her boyfriend is calling her selfish.

He got upset and said I was being selfish and unsupportive.

Now, things are tense between us.

I don’t want to be the bad guy, but I also don’t want to feel unwelcome in my own home.

AITA for saying no?

It’s her home too. He really should’ve asked her first.

Let’s see what others on Reddit have to say about this.

It’s a huge red flag, says this person.

Here’s a similar thought from this user.

Another valid point from this person.

Finally, short and straightforward.

Being kind doesn’t mean being a doormat.

If you thought that was an interesting story, check out what happened when a family gave their in-laws a free place to stay in exchange for babysitting, but things changed when they don’t hold up their end of the bargain.