Woman Accused of ‘Sabotage’ After Revealing She Slept with Sister’s Boyfriend When He Claimed He Was ‘Saving’ Himself

A woman turned to Reddit after a family blowup that started, in her words, with an attempt to be honest.

In her post, she explained that her sister became enraged after discovering that the man she’s now planning to marry once briefly dated the poster when they were teenagers.

The woman shared that she and her sister’s now-boyfriend had a short-lived relationship in high school. “When I was 16 I dated my sister’s now boyfriend for about 6 months,” she wrote, adding that it “wasn’t a super serious relationship.”

She noted that, despite the casual nature of the relationship, they were intimate a few times. She emphasized that it ended on good terms, with no lingering emotions or drama between them.

As they grew older, they stayed friends and simply moved on with their lives. Years later, her sister began reconnecting with the ex-boyfriend and eventually asked if it would bother her to date him.

The poster said she genuinely gave her blessing. “I had absolutely no problem with it and told her there were absolutely no weird feelings,” she wrote, stressing that the high school romance was nearly a decade in the past.

Her sister and the boyfriend went on to date for three years. During that time, he even asked the poster to help plan his proposal. She was fully supportive and said she truly wished them a happy future together.

The conflict started during a recent dinner with friends. Her sister joked that she hoped a proposal was coming soon and commented that she felt like an “old maid” because she and her boyfriend had been “saving themselves for marriage.”

The poster said she was confused and asked whether her sister meant saving herself in this relationship or in general. According to the post, her sister replied that both she and her boyfriend “had been saving themselves their whole life.”

At that moment, the woman instinctively glanced at her ex across the table, realizing what was being implied. “I gave her boyfriend a strange look from across the table and she caught it,” she wrote. Her sister immediately demanded to know why.

Trying to avoid humiliating anyone, she initially tried to brush it off. But her sister kept pushing for an explanation. Feeling cornered, the woman finally told the truth: “I confessed that we had sex in high school, although it didn’t really mean anything.”

Her sister was stunned and furious. First, she turned on her boyfriend for allegedly lying. Then, when he denied that anything had ever happened, her anger shifted to her sibling. The poster said her sister became convinced that she was “trying to sabotage our future marriage because you’re not over him.”

The woman insisted that she has zero romantic feelings for her ex and never intended to damage their relationship. Despite this, her sister refused to believe her. The couple left the dinner abruptly, and the next day her sister sent a message saying she would not be invited to the wedding unless she admitted she had made the story up.

The poster wrote that she regretted how the conversation unfolded and wished she had found a different way to handle the situation—or avoided answering altogether. Still, she felt that, once she was directly questioned, she owed her sister the truth, especially since the boyfriend’s claims about being “saved” weren’t accurate.

Reddit users largely sided with the poster, saying she wasn’t wrong for being honest after being pressured. One commenter wrote, “You are not responsible for facilitating his lies and you are NTA… but I doubt their relationship survives.”

Another suggested that the sister might be choosing denial over facing an uncomfortable reality: “Hopefully, she doesn’t walk blindly into this because if he’s lied about this, he has absolutely lied about other things.”

For now, the sisters remain estranged. Friends have tried to step in and help smooth things over, but according to the post, the bride-to-be has not responded to any attempts at mediation.