Redditor Ends Sister's Relationship After Telling Her Boyfriend That She Won't Accept His Proposal

OP (28F) is set to marry her fiancé (34M) in September, but a situation with her fraternal twin sister, who is dating her fiancé’s younger brother (29M), has caused quite a stir. OP’s sister has a long history of making negative comments about her boyfriend's last name.

Throughout their relationship, the sister has frequently mentioned how awful she thinks her boyfriend's last name is, even stating that she could never marry him because of it. OP, trying to be supportive, suggested that her sister could keep her maiden name if she ever got married.

However, the sister insisted that she wanted a traditional marriage where she took her husband’s last name, and keeping her maiden name wasn’t an option.

OP asked her sister what she would do if her boyfriend proposed. Given that they’ve been dating for three years and OP knew her fiancé's brother was looking at engagement rings, it seemed like a natural question.

The sister replied that she would only accept the proposal if her boyfriend changed his last name. This seemed incredibly selfish to OP, and she told her sister so. The sister, sticking to her guns, said she would turn him down because of the last name.

This left OP wondering why her sister was even in the relationship if she knew it wouldn’t lead to marriage. The sister’s nonchalant “I don’t know” left OP even more baffled.

The situation came to a head when OP’s fiancé’s brother showed OP photos of engagement rings, seeking her opinion on which one her sister might like. She told him that her sister wouldn’t marry him because of his last name.

Understandably, this was heartbreaking news for him, and he ended the relationship the next day without explaining the reason to her sister. However, her sister quickly realized that OP had something to do with it and blamed her for the breakup.

Now, OP is dealing with the fallout. She's left wondering if she should have let the situation play out on its own rather than intervening.

OP's has a twin sister who's dating her fiance's brother

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OP's sister has made several comments about how OP's new last name will be terrible

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OP found out that her fiance's brother is looking for an engagement ring

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OP's sister claims that she would only get engaged if he changed his last name

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OP told her fiance's brother what her sister told her about the last name

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The two broke up and OP's sister knows the reason

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It turned out that OP's sister was just upset because she wanted to be the one to end the relationship

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It's not just about the last name

u/Trespassingw

A harsh reason

u/GirlDad2023_

The most illogical situation

u/Pokeynono

What's done is done

u/Rickdick4663

There was no smart thing for OP to do here

u/krazkatwoman

Looking at the situation, it’s clear that OP was put in a difficult position.

On the one hand, she wanted to protect her fiancé’s brother from a potentially heartbreaking situation where he would propose and be turned down because of something as trivial as a last name.

On the other hand, her honesty led to a breakup that has caused tension within the family and may cast a shadow over her upcoming wedding.