AITA For taking my girlfriend’s sister’s son to the Police station?

The morning started with a knock at the door, but for one man, it turned into a nightmare when his girlfriend’s sister dropped off her 1-year-old son and vanished. Despite his protests that he had to get to work at the hospital, she ignored him, turned off her phone, and left him with no choice but to take the child to the police. Later, he learned she was just renewing her gym membership, sparking a firestorm of family backlash calling him selfish.

This Reddit saga is a wild ride of betrayal, boundaries, and babysitting gone wrong. The sister’s reckless move and the family’s outrage raise big questions about responsibility and trust. Can a guy caught in the middle do the right thing without burning bridges? Let’s unpack the post and dive into what happens when family dumps more than just drama on your doorstep.

‘AITA For taking my girlfriend’s sister’s son to the Police station?’

I (M28) have been with my girlfriend for over 10 months. She recently moved in with me in my apartment. Her sister would ask her to watch her 1 year old son while she takes care of her husband who's been in the hospital for 2 weeks. I only know where my girlfriend's parents live. never visited her sister's house.

Last week My girlfriend was working out of town for 4 days. In the early morning her sister came over with her son asking if my girlfriend came back to watch her son temporarily. I told her my girlfriend was still out of town. She insisted I watch the baby for few hours. I told her I can't and I had work to go to (I work at the local hospital).

She walked out completely ignoring me saying it won't take long. I waited for an hour I was late for work I called my girlfriend's sister telling her to come pick her son up cause I had work. I asked for their address cause I wanted to take him back to their house but she refused. I wanted to take him to my girlfriend's parents house she yelled at me saying she'll deal with me if I take her son there. I felt helpless didn't know what to to do.

I just took her son off to the local police station after she turned her phone off. I provided them with information to be able to reach my girlfriend's sister. later I found out that my girlfriend's sister was brought to the police station. She lied saying I agreed to watch her son and talked about how well she knew me and how this whole thing was arranged.

then cried about her husband being in the hospital and how o**rwhelmed she felt. I denied what she claimed. I said I didn't agree on watching her son and explained I wasn't capable of handling this responsibility. For some reason other family members were involved nd it got worse.

I had her family yelling at me for what I did calling me all sorts of bad names. I was eventually allowed to go but my work shift was ruined because of this. My girlfriend found out from her family that I caused her sister an issue with the police on top of what she's already been dealing with because I refused to lend a hand.

I explained to her what her family did and she apologized and assured me this was no one's fault but her sister. Since she wanted me to watch her son while she goes to renew her membership at the gym. I was stunned to hear that. However her parents and relatives are mad at me telling me I messed up and that they now see me for the selfish jerk I am.

Dropping a toddler on someone who says “no” and then ghosting them is more than a faux pas—it’s abandonment. The sister’s actions put her child at risk and forced a tough call. Dr. David Pelcovitz, a family psychologist, notes, “Clear boundaries are essential in family dynamics, especially when childcare is involved” (Psychology Today). By ignoring the man’s refusal and turning off her phone, the sister violated trust, leaving him with no safe option but the police.

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The family’s backlash, accusing him of selfishness, reflects a classic deflection of guilt. A 2022 study in Family Process found that enablers often rally around irresponsible family members, shifting blame to protect them (Wiley Online Library). The sister’s lie about her husband’s hospitalization—when she was just at the gym—shows manipulation, not overwhelm. Her refusal to let the child go to her parents’ house hints at deeper issues, perhaps avoiding accountability.

This story highlights a broader problem: family expectations clashing with personal limits. Childcare is a serious responsibility, not a casual favor to demand. The girlfriend’s support is a silver lining, but her family’s enabling risks future drama. Dr. Pelcovitz advises setting “firm, consistent boundaries” to prevent repeat incidents, like refusing to open the door unless agreed upon.

For resolution, the couple should unite on clear rules: no unagreed childcare, period. The man could document the incident and family harassment for legal protection, especially if the sister escalates. A calm discussion with the girlfriend’s parents, explaining his duty to keep the child safe, might ease tensions. The sister needs accountability—perhaps a social worker’s involvement—to ensure her son’s safety moving forward. The man’s quick thinking protected the child, and that’s what matters most.

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Here’s the comments of Reddit users:

The Reddit crew rolled up with pitchforks and applause, ready to dish. Here’s the raw scoop:

Maleficent_Ad_3958 − NTA. You didn't agree to this and the sister should not have dumped the kid on you. However, I'd like to know: so if I'm reading this correctly, the hospital thing was a lie and your girlfriend's sister just wanted to go to the gym? Man, that makes her crap worse. I honestly think your girlfriend needs to push back harder on the family or you'll be dealing with this kind of drama constantly.

Outofworkflygirl − NTA. What your girlfriends sister did was abandonment. Leaving a child in the care of someone who cannot or will not take care of the child. If all she was doing was renewing her gym membership, why couldnt she have taken her kid with her?

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Its literally just entering some numbers on a tablet and swiping a card. No different from the grocery store. You and your girlfriend need to have a heart to heart. No more watching that kid in your home. Sister is just the type that would say you did something to baby and then you are in a whole heap that you dont want to be in.

ICWhatsNUrP − NTA. At all. Sister left her baby with you over your objections, assuming you would be like what I assume her parents do and bend to her whim. You tried contacting everyone, and sister shut off her phone. Taking the kid to the police station was the right thing to do.  It provides a safe spot for the kid, and some actual consequences for sister for a change..

her sister an issue with the police on top of what she's already been dealing with Well, well, well. If it isn't the consequences for my own actions. Fancy meeting you here! Seriously, if she hadn't *abandoned her child with basically a stranger,* she wouldn't be in trouble for child abandonment. Ignore the family of enablers and be glad your gf sees through this.

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The__Riker__Maneuver − NTA. Look...you were put in a tough spot. And your girlfriend's sister is in a tough spot. But she can't just dump her baby with someone she doesn't know and then turn her phone off and ignore the problem. And the reason she didn't want you taking the baby to her parents house was

because she was probably somewhere she wasn't supposed to be. There's no reason she couldn't take her baby with her to renew a membership at the gym. And why was taking the baby to her parents such a non starter? So much so that she made veiled threats.. Something smells fishy to me in that regard.

[Reddit User] − NTA. I hope your gf is nothing like her awful family.

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Fickle_Ostrich4923 − NTA. I think the sister is full of s**t though, renewing a gym membership doesn't take more than an hour. Hopefully the police scared her out of abandoning her child with people who have clearly said they aren't available for babysitting.

[Reddit User] − NTA - I cannot fathom dropping my kid off at the home of someone who is dating my sibling (who doesn’t even have my address) ignoring them when they say they can’t watch the kid and have to go to work. Then turning off my phone..

There is something very wrong here. Why force babysitting on someone she barely knows over her parents? Taking the kid to the police set a boundary. Forcing you to skip work to watch her kid and lying about what she’s doing is over the line. If you’d called in to work and watched the kid, she would just expect it again and again.

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[Reddit User] − NTA She literally abandoned her child with you. Next time, don’t open the door. Just tell her through the door “I cannot babysit. If you leave your kid here, I will take them to the police again.” I honestly don’t see how you could be TA here since you explained many times that you couldn’t take the kid.

[Reddit User] − NTA you said no, she didn’t come back quickly like she said she would, she turned off her phone, and she seemed to not care at all. Poor kid.

Lh911 − Well guess the sister will not be dropping kid off on you in the future. Killed two birds with one stone. Sister lied, she got called to the PD. I hope they gave her info To CPS. NTA Sister has some nerve.

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These Redditors backed the man’s tough call but smelled something fishy with the sister’s story. Are they calling it straight or stirring the pot?

This story is a stark reminder that family can push boundaries until they break. The man’s choice to involve the police wasn’t cruel—it was about keeping a child safe when no one else would. The sister’s lies and the family’s rage only deepen the mess, but his girlfriend’s support offers hope. Have you ever been stuck with an unfair responsibility? How would you handle this family chaos? Share your thoughts below.

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