AITA for refusing to go to my brothers wedding after finding out my future SIL trashtalked me at her bachelorette party?

A bachelorette party revelation turned OP’s world upside down when she learned her future sister-in-law, Sarah, viciously trashed her behind her back. OP (28F), who thought she had a decent relationship with Sarah, was stunned to hear she’d been called a “whore” and accused of an affair. When she confronted her brother, Mark, hoping for support, he brushed it off as drunken talk and accused her of overreacting. Now, OP faces a painful dilemma: attend the wedding to keep the peace or skip it to protect her dignity.

Sarah’s cruel words and Mark’s dismissal have left OP feeling betrayed and humiliated. Is she wrong to consider boycotting the wedding? This story will make you question: how do you balance family loyalty with self-respect when trust is shattered?

‘AITA for refusing to go to my brothers wedding after finding out my future SIL trashtalked me at her bachelorette party?’

OP described her close bond with her brother and initial impressions of his fiancée:

Sarah’s drunken tirade was deeply hurtful:

Confronting her brother led to more frustration:

She expressed her struggle with the decision:

OP’s story is a heartbreaking example of how betrayal and slander can fracture family ties. Sarah’s drunken tirade—calling OP a “whore” and accusing her of an affair—crossed a serious line, revealing either deep-seated resentment or reckless disregard for OP’s reputation. Mark’s dismissal of the incident as “just drunk talk” compounds the hurt, signaling a lack of empathy and loyalty to his sister.

Dr. John Gottman, a relationship expert, notes, “When family members dismiss valid feelings of hurt, it erodes trust and creates emotional distance” (The Relationship Cure). Sarah’s comments weren’t just gossip; they were defamatory, with potential to damage OP’s social standing. Mark’s refusal to take OP’s concerns seriously prioritizes his fiancée over his sister, undermining their once-close bond.

From a social perspective, this situation highlights the pressure to “keep the peace” in families, often at the expense of addressing toxic behavior. Sarah’s remarks, even if fueled by alcohol, reflect her true feelings, as alcohol often lowers inhibitions rather than invents beliefs. The fact that other guests laughed along suggests a group dynamic that enabled the cruelty, further isolating OP. Mark’s insistence that OP attend the wedding to avoid drama places an unfair burden on her to suppress her pain.

OP should prioritize her emotional well-being. Before deciding on the wedding, she could request a mediated conversation with Mark and Sarah to address the slander and seek a sincere apology. If Sarah refuses to take accountability or Mark continues to dismiss her, skipping the wedding is a valid way to protect her dignity. Long-term, OP should consider low contact with Sarah and reassess her relationship with Mark if he continues to prioritize his fiancée’s behavior over her feelings.

Here’s the feedback from the Reddit community:

The Reddit community rallied behind OP, condemning Sarah’s behavior and Mark’s dismissive attitude.

Many supported OP’s right to skip the wedding and protect her dignity:

Some suggested confronting Sarah or going low contact:

Others proposed attending the wedding strategically or skipping it entirely:

Some expressed outrage at Sarah’s behavior and Mark’s response:

OP’s story is a stark reminder of how betrayal can shatter family bonds. Sarah’s vicious lies and Mark’s refusal to take them seriously have left OP understandably hurt and questioning her place at the wedding. Skipping the event to protect her dignity is a valid choice, especially without a genuine apology from Sarah.

Should OP demand a confrontation with Sarah before deciding, or is skipping the wedding the best way to stand up for herself? What do you think of Mark’s dismissal of her feelings? Share your thoughts in the comments!