AITA for telling my husband’s childhood best friend she’s too involved with my kid?

In the fragile dawn of parenthood, a couple faced the raw, relentless challenges of their first newborn with trembling hearts and weary souls. The relentless cries and sleepless nights tested their resolve, yet hope flickered in the unwavering kindness of a close friend who embraced their new reality with open arms and selfless love.

But as the days stretched on, the once comforting presence began to cast shadows of doubt and unease, revealing the delicate balance between gratitude and intrusion. What started as heartfelt support now teetered on the edge of something more unsettling, leaving the family to question the true nature of the help they so desperately needed.

AITA for telling my husband’s childhood best friend she’s too involved with my kid?

A bit over a year and a half ago me and my husband gave birth to our son. It was our first kid and we were incredibly nervous and scared we were gonna screw things up. The first week with him back where horrid he cried all the time and it was ridiculously exhausting but I’d be lying if I said we didn’t know what we were getting into.

At the start my husbands bsf was amazing she would come round all the time bring us food spend time with our son baby sitting so we could some time away and really appreciated the help and she seemed to genuinely love my son.

When my maternity leave was finished and I went back to work she offered even more of her time to help with baby sitting instead of me hiring someone.

I said that I couldn’t make her do that and she surely had other things do and she said it was fine she works from home on her online buisnesses anyway and she even refused pay.

And honestly I didn’t mind any of the help until now.

I recently noticed on our doorbell that she had been coming in at night while I was doing occasional night shifts. I thought it was strange but you know free help so I never confronted it as weird as I felt it was.

But yesterday when I came home from a shift and found my son playing with her and found that he kept referring to her as mama I think soemthien kinda broke inside of me and I told her to get out.

She protested and asked what’s wrong and I just asked her to leave and to not come here again and she accused me of being jealous and that I was scared I was being replaced. She pointed out that if i was a more involved parent my husband and son wouldn’t need a “second wife” and I screamed at her told her if she knows what’s good for her she should get out.

She finally did.

My husband came home a bit after and I told him about and he just shrugged and didn’t say anything. But my MIL called and had a go at me basically repeating her talking points and saying that I needed to apologise.

And honestly I’m at a lost cause at this point I feel really bad and felt like went to far. Am I the arsehole ?

Here’s how people reacted:

Mamadoni23

Nta. First of all, the issue here is your husband. Not only is he accepting this behavior, he’s backing it. His silence speaks volumes. He’s also VERY likely cheating with her physically. Pay attention to the wording she used. She didn’t feel entitled in a motherly way. She feels entitled in a wifely way. I would keep physical evidence that you have told her not to come around your son or home again (such as recorded calls, videos, or text messages) and if she keeps persisting and showing up anyways I would file a police report. It’ll be easier to get a restraining order at that point. This is why this is important: if you end up splitting from your husband, he will not be able to steamroll you and keep her around your son without supervision. For now, regarding your husband, I would talk to him about how his response to this makes you feel. If he continues to blow it off or seemingly to be not supportive of you, you’ve got bigger issues. Be careful not to leave your home and stay elsewhere if it does blow up. Good luck op.
BBsAmazon

A child, at 1.5 years, doesn’t call someone else mama unless that child has been coached. That’s just weird and WRONG!
And the MIL chiming in, repeating what hubby’s “friend” said is highly suspicious. That woman needs to go far, far away – same with the MIL! My MIL has never been anything but genuinely nice to me! There is something wrong with this woman.
OP, you are his mama – no one else.
You and hubby need to get professional counseling, too. Firstly, for MIL problem and secondly, for “best friend” problem, and thirdly, for husband problem. An emotional affair can often lead to a physical affair. Not good. This whole situation needs to do a 180! Take it in hand and move forward with doing just that, OP.
TeachingSoggy5953

NTAH

Did you have a messy reaction to hearing your child call another woman mama? Yes.

Was that woman’s response to you appropriate? *Absofuckingloutely not*

Was your husband’s response appropriate?
*absofuckingloutely not*

Was your MIL’s response appropriate?
*absofuckingloutely not*

OP these are some really, really red flags. The level of enmeshment and the expectation that you dont get to make or enforce boundaries is really worrisome to me. If you feel outnumbered and isolated it is because you are and the best thing you can do for yourself and your baby is to remedy that situation by any means necessary

BlurredInTheCrowd

On a practical point, since you have your own income, it might be worth it to get a nanny who you can work with than depend on family for child care. (Or go the daycare route but the nanny might have a more flexible schedule.) If at all possible, make sure you pay the nanny yourself so she reports to you directly.

I’m sure you and your husband will have a long talk about boundaries. Why he allowed this to happen is beyond me. If it comes down to a separation, your nanny will be a big help to you in providing continuous care. I would certainly not let your mother in law (or anyone!) bully you into not working.

Ok_Reply_2038

So she comes in at night? The baby is asleep? Your husband is asleep? What exactly is she doing? Waking up your baby to play and leaving before you get home? Or is she being that 2nd wife to your husband all night? 

I’m guessing that straight up fukkin while you’re at work and the baby is asleep. 

I also wonder if she has fertility issues and this was part of a bigger plan to get them a baby.

 But why would he marry you if that was the case? That theory doesn’t add up, especially since idk the length of the marriage and dating prior. Just a thought. 

Keep_this_a_secret98

very very rarely when I’m taking her out my niece will call me mommy and I correct her every single time “I’m not your mom, your mom works really hard to take care of you” sometimes she’ll say it’s a joke or she’s just pretending and I always tell her it’s not a very funny joke cause it would make her mom upset. I can’t even imagine ASKING someone else’s kid to call me mommy
Several-Finish-3216

NTA. People need to work in order to feed and clothe their babies. Red flags over your husband and MIL. It would be in your best interests and your son’s to leave. For sure they are having an affair and she is the “second wife” not just in name. For sure she is trying to steal your son, and it looks like MIL is helping her.
Responsible-Plum5351

Some of these comments are wild. Thinking someone is in your village so that you can work does not mean that they get to be called a “second wife,” and your child’s “mama.” That makes me sick. Your husband is so suspicious. And what the hell is up with your MIL?? I feel like there’s missing info.
NoBigEEE

NTA. This is a very messed up situation. If OP hired a nanny/housekeeper, no one would expect the paid help to be called mom or second wife. And if Dad is not spending a lot of time with the child, is the BF taking over as dad too? OP may have overreacted but BF stepped over the line.
MrLizardBusiness

NTA- I don’t want to be the “they’re having an affair” person, but she’s also coming at night when you’re on night shift?

Your husband and his family want you to “accept that you’ve been replaced as a mother?” Your child is barely old enough to talk.

gloryhokinetic

NTA. Tell you hubby that she is not allowed in the house ever with out you there and with prior approval or he will be looking at a custody battle. And that he better set his mom straight or she will also be banned from your home.
Vivid_Motor_2341

Babies don’t just start calling people mama they mimic you so she’s calling herself mama to your child. You need to have a serious conversation with your husband about cutting this woman from your guys’s life.
Factor-Available

Wait, I’m confused. Who was watching baby at the house while mom was on night shift? How was the best friend at home alone with the baby when mom got home from work?
Safe_Requirement7879

NTA her accusing u of being jealous and referring to herself as the second wife and clearly it seems your husband doesn’t even stick up for you to his mom or her.
ZookeepergameFew1468

Do not apologize to her. Tell your MIL she can come play second wife to her husband. Tell your husband this a good way to be come single real quick.
Firm_Pen_4184

Tell your husband and MIL that you’ll be the traditional wife they want you to be for your child as long as they provide you and your kids need.
Universe_Reddit

I mean you let this happen because you were enjoying the free help too much. Y.T.A here. You could have handled this differently.
dannypurplerose

Oh no! This is totally Hand That Rocked the Cradle sh*t! You need to remove her and completely dismiss anyone taking her side!
VodkaSt8UpThankU

The Hand That Rocks The Cradle is a fantastic movie. I wouldn’t be surprised if this woman has tried to nurse your child.
Low_Reception477

Babies don’t just start calling people “mama”, either she is referring to herself that way or your husband is..
stay_ahead11

NTA. Kick the friend. Kick the mom. If the husband chooses to do nothing or doubles down on you. Kick him too.
ForeverOne-01

Wow!! Second wife and mama too. I’m sorry You have a major husband problem. Start cleaning house.
UpdateMe 
Rogue_bae

Oh hell no. She *is* trying to replace you. Tell her to get a job & her own life. Your husband is shit too

Conclusion

The original poster (OP) experienced a significant breach of trust when they discovered their husband’s best friend (BSF) was entering their home and caring for their son, leading to the child recognizing the BSF as “mama.” This discovery forced the OP into a confrontation, ending the BSF’s involvement abruptly. The central conflict lies between the OP’s need to protect the parental bond and household boundaries versus the significant, yet unsolicited, support offered by the BSF, which the OP’s husband appears to tacitly support.

Was the OP justified in immediately severing ties with the person who was providing substantial, free childcare, or did the emotional reaction to the child’s bonding and the BSF’s secretive nighttime entries constitute an overreaction that damaged necessary relationships? The core question remains: Where is the line between accepting generous help and allowing an outside figure to dangerously blur essential parental roles?

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