AITA for telling my son I can’t trust him?

One Friday night, OP returned home at midnight from an event to a distressing scene: their 15-year-old son was fast asleep, while one of their 8-year-old twin daughters was violently ill and the other was in tears. It turned out the son had given the twins peanut butter, a food the family knew made them sick, though not allergic.

When confronted, the teen brushed it off, calling his sisters “snitches” and downplaying the issue. Frustrated by his attitude, OP declared they couldn’t trust him anymore. His defiant response left OP questioning: were they too harsh? This story peels back the layers of parenting a teenager, sparking curiosity about the line between discipline and understanding.

‘AITA for telling my son I can’t trust him?’

It all started when OP asked their son to babysit his younger sisters:

I have 3 kids. A 15 year old son and 8 year old twin daughters. They all get along well and my son loves his sisters and vice versa. Sometimes...

He usually says yes unless he has plans (I just ask my mom then). So on Friday night we had an event to go to and I again asked my...

The situation escalated when OP discovered a crisis upon returning:

We came back at around midnight and I went to check on the kids and my son was fast asleep while one of the twins was puking her guts out...

I was surprised but I also didn’t really blame my son in any way. They weren’t really making any noise and were clearly asleep before all hell broke loose.

Well I manage to calm my girls down and they end up telling me how their big brother was really mean and grumpy all day and when they asked for...

Confronting their son revealed a troubling attitude:

The girls know as well but they were hungry and he said they HAD to eat it. My son knows this and the peanut butter is kept out of the...

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He just made a noise and was all like “the little snitches... yeah so they had a little peanut butter what’s the big deal? ” I told him that he...

He just told me to stop overthinking, he forgot peanut butter makes them that sick, he only said they had to eat it because he didn’t want them going hungry,...

I told him that these excuses are not good enough and that what he did was honestly kind of cruel. I told him that I don’t know if I can...

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The teen’s dismissive response heightened tensions:

He just rolled his eyes and told me that I’m being really f_cking dramatic and that the twins will be fine, I don’t need to act like this. He’s really...

He’s not budging and he’s not normally like this so I’m wondering AITA? My sister told me to post on here since I’m so conflicted. Didn’t think it would hurt.

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The teen’s actions, while not malicious, reflect a serious lapse in responsibility that endangered his sisters. Giving them peanut butter, knowing it makes them sick, and his dismissive attitude afterward raise red flags. Dr. Robert Cialdini explains, “Teenagers often underestimate consequences, but that doesn’t absolve them of accountability” (Influence: The Psychology of Persuasion, 2006). OP was right to express distrust, as the twins’ safety was compromised.

Yet, the teen’s defiance may mask deeper issues. At 15, he’s navigating a turbulent developmental stage, potentially stressed by school, peers, or family duties. Dr. John Gottman suggests, “Engaging teens with empathy rather than criticism can uncover the roots of troubling behavior” (Raising an Emotionally Intelligent Child, 1997). OP’s blunt statement about trust may have wounded him, fueling his resistance.

The online community agrees the teen’s actions were unacceptable but urges OP to explore whether he’s struggling, perhaps resenting frequent babysitting or facing external pressures. Some note the twins, at 8, could learn basic food prep to ease his burden. Still, his coercion and lack of remorse demand addressing.

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OP should hold a calm family meeting with both parents present to probe the teen’s feelings about babysitting or other stressors. Clear consequences, like pausing babysitting duties, paired with guidance on responsibility, are key. Teaching the twins simple kitchen skills and considering professional help if the behavior persists could help. This story highlights the delicate balance of parenting with empathy and accountability.

Here’s what the community had to contribute:

The online community weighed in passionately, offering support, concern, and some critique.

Many backed OP, condemning the teen’s reckless behavior and attitude:

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Karate-Chop-SR - NTA If this had been someone other than your son, I'd be calling it abuse and a_sault. Certinally negligent. He is clearly unreliable and I'd be very upset....

[Reddit User] - NTA. He needs a therapist. Cruelty without remorse isn't normal. Possible guesses- he's been through a recent trauma, he has a new addiction (video games, [or drugs,...

he has executive dysfunction (i. e. his brain wouldn't let him make/order food) and is lying to cover up for it. That last one's a little out there, granted, but...

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Edit: to clarify, problems lead to stress, and stress can lead to bad behavior. I'm not saying video games or whatever causes violence. I'm saying these are common problems that...

Gilraen_2907 - I have an almost 15 year old daughter, and unless he is on some kind of spectrum, he knew what he did was wrong. I would have woke...

And he just handed them the jar? Didn’t make a sandwich or anything? His continuously saying he was cruel and you can’t trust him, is his way of “punishing” you...

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He is trying to make you feel guilty for saying them in the first place. Maybe that hurt his feelings, maybe because he didn’t see it that way at first...

Make sure your husband is there and ignore all eye rolling. Tell him if he doesn’t want the responsibility of taking care of his sisters, then he needs to say...

That yes, he was cruel and you can’t trust him to be responsible for his sisters anymore. Maybe you were “being dramatic,” but if they were allergic to peanuts this...

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Maybe he is jealous of the twins, maybe they get more attention. Maybe he doesn’t actually want to be a babysitter, and doesn’t want to tell you. Maybe something is...

15 years old usually means high school. In one year he could get his license. Three years until being considered an adult. This conversation needs to happen now.

Edit: Sorry NTA. He needs to understand he broke the trust. Another edit: Thanks for the award! Yet another edit: It has come to my attention that I have been...

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and must apologize for any inference that anyone on the autism spectrum or otherwise is inherently evil or unable to know right from wrong.

That was not my intention, I was merely trying to add an addendum that perhaps some such could have prevented his understanding that what he did was more harmful than...

SophiaRaine69420 - Nta but I'm concerned about all the kids involved here. Has there been a sharp change in his behavior recently? Is there possibly a need of his that's...

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Something is not right if he's all of a sudden causing intentional harm to his younger siblings. Keep the younger one's safe and have a real talk with the older...

Baileythenerd - NTA- ah your son is hitting that teenage phase where he's just arbitrarily being an a_shole. No, what he did WAS cruel and honestly a little punishment should...

If he's taken care of his sisters before and KNOWS how to do so responsibly, then he was absolutely out of line forcing them to eat something that would make...

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Ok_Job_9417 - NTA - but is there more going on here? Like a jar of peanut butter isn’t food, even teenagers don’t forget allergies especially since twins told him so....

NGDGUnpunished - NTA, but I'd get to the bottom of his sudden change in behavior. It could just be normal teenage stuff, but if this isn't standard, something else might...

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I'm not suggesting you let him off the hook because I think there should be consequences for treating his sisters so badly and how disrespectfully he responded when you called...

AsuraRathalos - NTA but you're taking this way to lightly for a woman who's son basically poisoned your daughters, to the point one of them was puking her guts out....

That kid needs a special punishment and he's acting way to defiantly. .. Like we all were teens and all defiant, but to brush off this is something different

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Some suggested OP and the kids share responsibility:

whereisourfarmpack - You’re NTA but honestly at 8 the twins can heat up leftovers. This is the time to teach them stuff like this. It’s a good learning moment to...

don’t shove metal in the toaster or microwave, don’t touch the knives or stove and if you need to heat something up you do XYZ. Your son though at minimum...

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Edit: I actually think you should have organised dinner. That was a mess up on your part. But your son still should’ve helped them heat up leftovers or called about...

Larkiepie - NTA Please please please PLEASE take all the peanut butter out of the house. They are allergic. Just because it doesn’t show in the ‘well known’ ways doesn’t...

Sometimes they’re deadly. You’re very very very lucky that their reaction wasn’t much worse. Especially with that much peanut butter. Its lucky you came home to puking and crying and...

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Allergic reactions are NOT always asphyxiation and gives but you don’t want that reaction to happen. I beg of you get rid of the peanut butter and take them to...

Kris82868 - NTA. But it seems odd they would eat peanut butter even if hungry. I mean I know 8 year olds don't tend to be chefs, but was there...

billabongxx - When we were 8 years old we could just make our own sandwhiches? Your daughters knew they cant eat it? Your son knows they cant eat it. ESH...

They can surely butter some bread and get cheese or a bagel or heat up beans themselves in a microwave. Toast, cheese, crackers, fruit, crisps, ice cream, chocolate. . isn't...

Others called for deeper investigation into the teen’s motives:

Groftsan - INFO: Why is the peanut butter hidden? Do the girls like it in spite of the fact it makes them sick? Do they seek it out? Has your...

Do they usually just get sick at night after they have it and come wake you up with a stomach ache? Has the son actually seen them be sick versus...

Is it possible your son just made a dumb choice out of laziness (or was he having just a real bad day due to some outside circumstances you don't know...

Essentially, I just want to make sure your son is heard, even if he is in the wrong, as he may have been negligent rather than malicious.

PittieLover1 - Info: How often is he asked to babysit and is he compensated for it in any way? It almost sounds like this was deliberate so he would never...

One user felt OP was too harsh:

Butt-Dragon - YTA he's 15 and is probably pretty tired with watching your other kids all the time. Probably not sure how to express it so he acted out.

OP was justified in confronting their son for his reckless babysitting, which put his sisters at risk. However, his stubborn defiance suggests underlying issues, perhaps resentment or stress, that need addressing. This story underscores the challenges of parenting a teenager, where communication and empathy are as vital as discipline.

Could OP have approached their son with more patience to uncover his struggles? How would you handle a teen’s lapse in responsibility? Share your thoughts below to spark a conversation about rebuilding trust in families!

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