AITA for telling my BIL that I wouldn’t sleep with him even if my life depended on it in front of his family and friends?

She thought the past was behind her, a chapter closed and buried deep within the memories of her college days. But at a birthday dinner meant for celebration, the ghosts of old mistakes and careless words emerged, tearing through the fragile peace she had with her fiancé and his family. The sharp sting of Jacob’s drunken jibes cut deeper than anyone expected, stirring a storm of discomfort and unspoken tension.

In that charged silence, the weight of judgment and misunderstanding pressed down on her, threatening to unravel the bond she was building with Jax. Yet amidst the awkward glances and fractured smiles, her fiancé’s quiet defense became a lifeline, a reminder that love and loyalty might just be strong enough to weather this painful test.

AITA for telling my BIL that I wouldn’t sleep with him even if my life depended on it in front of his family and friends?

I (24F) got proposed to 2 months ago. My fiancé Jax (28M) has a younger brother Jacob (23M) who I went to college with. When I was in college I slept around a lot and was pretty known for that.

My fiancé knew this and so did his brother. Jacob was a bit of a jokester so he liked to bring it up frequently. At family gatherings, birthdays, holidays, etc. My fiancé and his family often told him to stop when they saw I was uncomfortable with it.

Last night it was Jacobs birthday dinner. Me, my fiancé, a lot of his friends, and a few younger family members were there. Jacob started getting more drunk and started cracking unfunny jokes.

Some included him saying how he was surprised i never took the chance to sleep with him in college. Being fed up and a little bit drunk I told him i wouldn’t sleep with him if my life depended on it.

He got pissed and kept silent. The dinner was awkward for the rest of the time. My fiancé said and some of his family said that I didn’t do anything wrong and they even have been waiting for me to tell him that.

This morning I woke up to texts from Jacobs friends telling me I’m a whore and a bitch.

Here’s how people reacted:

FeuerroteZora

Absolutely NTA, but look, **your fiance and his family** ***really*** **need to do something about this beyond just asking him not to do it**.

They’ve asked him to stop and he hasn’t stopped; now he’s escalated it to his friends sending you abusive misogynist messages.

Sit down with your fiance and ask him what he’s going to do about it. If he says “Well I already asked him to stop, what can I do?” then you tell him the following:

**You cannot control your brother’s behavior, nor am I asking you to. But you’ve asked him to stop and your brother refuses to change. Since** ***something*** **needs to change for this behavior to stop, and since it’s not going to be brother, it needs to be the rest of you.**

If you ask someone to do something once or twice and they refuse, you don’t just throw up your hands and say “Well, I tried!” You either decide you can live with it, or you change your behavior so that their refusal doesn’t impact you as much.

By continuing this dynamic, your fiance and his family are saying “well, this sucks and is horrible for OP, but I guess we can live with this.” They probably don’t *intend* to say this, so communicating this is key! (“Go along to get along” is just such an ingrained strategy, that’s why they probably don’t even realize they are OK’ing his behavior by doing so.)

I hope that your fiance and his family will see your point and be willing to change their behavior. I’d certainly encourage you all to strategize so you’re on the same page the next time this happens.

If fiance and/or family want to continue *their* behavior, well, then, again: The only person whose behavior you can control is you. And your choice is the same: Decide *I’m OK with this for the sake of family peace even though I’m being verbally abused*, or *I’m going to change my behavior toward this asshole*. And then tell (don’t ask) fiance and family about your decision, whether it’s that you’ll leave the room, blow an air horn at each comment, or just not attend.

magog12

NTA as you said in your post, you know you didn’t do anything wrong. People that insult women for having too many partners are misogynists. His jokes, if you don’t find them funny, are misogyny. You are not an AH for responding to that, certainly not how you responded. You could’ve emptier his beer on his head and not been the AH. Idk why your partner hasn’t told him to cut it out, maybe he doesn’t want to seem like he has a problem with you having multiple partners in the past, which he shouldn’t, but he should have a problem with his bro making jokes you don’t like.

Edit: yep, I missed the part where partner and family have spoken to him

Corpuscular_Ocelot

NTA. Even whores have standards, I guess?

Your future BIL is disgusting bully and his flying monkey brigade are a bunch of misogynist AHs.

Show your fiance the messages. FBIL has already been told it is unacceptable. He isn’t stopping for whatever creep reason. At this point, your fiance needs to deal with his brother’s behavior.

LordDesanto

NTA. He clearly wanted to sleep with you back then and is pissed off that he missed the chance to even try. He just wants to, I don’t know, roll the blame over to you? Like “if OP just had realized I’m the perfect guy, we would be together” or something like that. But that is not your problem, it’s his. And he has to deal with it.
Teacher-Investor

NTA

It’s not his job to announce information about your past to everyone and try to embarrass you. He’s done it several times, and everyone has told him to stop. So now he thinks you’re mean for finally standing up for yourself? How long were you supposed to take his harassment before saying something?

FluffyMom2Z

NTA – you were single and free to do what you pleased in college, no shame in that so no one should be shaming you. You’re fiance can be ok with your past and that’s all that matters. Everyone else can fuck off. And this brother is clearly TA because he wont respect your wishes for his to STFU about it.
MersWhaawhaa

NTA.

You may consider the decision that the next time he starts with this you leave and until he apologizes you don’t return to any family function.

If not – you and your fiance and your BIL to be need to figure out how to handle this because his behaviour is not acceptable at all.

PizzaInteraction

NTA
“You used to be a whore!”
“I would never have sex with you”
Cue tantrum.

Send him a birthday card meant for an 8 year old. Inside, write, “Sorry I ruined your birthday and sorry you act like a child.”

Sea-Mud5386

NTA Jacob has shitty, flying monkey friends. Your future in-laws have his number, and should do a better job shutting him down. He embarrassed himself and thought he could get away with it. Surprise!
jabmwr

NTA. It’s creepy that the brother always brought it up in front of family – or at all. Fuck Jacob’s friends; lashing out at you bc you hurt their friend’s ego is pathetic.
RoseGold-Bubbles1333

NTA and his “joking” like that is disturbing. To me it shows a complete lack of respect for you and also your fiancé. Your past is where it should be, behind you.
TheMobyDicks

NTA. Your former promiscuity is your business. He was bullying you and got smacked down. All is right with the world. Good luck!
curious382

NTA
Your sexual history doesn’t involve him. He needs to stick to talking about sex he was there for.

Conclusion

The original poster reached a breaking point regarding repeated, unwelcome comments about her past sexual history made by her fiancé’s brother, culminating in a sharp retort during a family dinner. While her fiancé and some family members supported her final stand, the immediate aftermath included harassment from the brother’s friends, leaving the OP feeling validated yet stressed by the social fallout.

Given the ongoing pattern of disrespect from Jacob and the subsequent harassment from his social circle, the central question remains: Was the OP justified in her harsh public response to finally enforce a boundary, or did her reaction escalate the situation unnecessarily, thereby creating new conflicts within the extended family dynamic?

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