AITA for telling my dad about my mum’s new partner to avoid her New Year’s party, after she asked me not to?

Being stuck between divorced parents is exhausting. For one 18-year-old, the tension didn’t end when the marriage did. Years after the split, he still finds himself carrying secrets, navigating hurt feelings, and trying to keep the peace between two adults who clearly never finished their emotional business.

When his mom invited him to a New Year’s party that included her new partner—someone she specifically asked him to keep secret from his dad—he finally hit his limit. Instead of quietly going along with it, he told his father the truth. The result? He got out of the party, but now he’s questioning whether he betrayed his mom in the process. On social media, opinions were sharply divided, with some defending his honesty and others warning that he crossed a boundary.

AITA for telling my dad about my mum's new partner to avoid her New Year's party, after she asked me not to?

The tension began long before this New Year’s invitation arrived

My (18/m) parents have been divorced for about seven years. My mum basically just decided she didn't want to be married anymore, started sneaking around and going on dates with...

I live with my dad and for years he's been encouraging me to try keep a good relationship with my mum even though they're not together.

This is difficult for me because I've never had a good relationship with her, and the divorce was actually a happy event for me since I no longer had to...

Things became even more complicated during the holidays last year

Last year, I was convinced to spend Christmas morning with her and her then-partner. My dad wasn't invited and it was just an awkward time all around. This year, she...

She had been pretty insistent about me becoming friends with a girl that she knew (L), who I only later found out was the daughter of her new partner, but...

My mum admitted she was with L's dad after I'd become friends with L (who wasn't aware I didn't know about the relationship), but asked me not to tell my...

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Then came the New Year’s invitation that pushed him to act

Even now, my dad seems to be very confused/upset about the divorce situation because my mum never really made an effort to work things out and just kind of vanished.

He's also religious and doesn't believe in divorce, but is very family-focused so it was a huge blow to his life. They're still friends though, and my mum keeps coming...

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The New Year’s invitation forced a decision

My mum sent me a message inviting me to a New Year's party with her and L. I gathered that L's family was going to be there, along with the...

My dad told me that I needed to go, but I was very uncomfortable and ended up telling him the whole story about who exactly this party would involve.

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He was pretty angry about it, though I'm not sure if it was because of his ex wife's new partner or the fact that she was still being deceitful about...

After that decision, guilt started creeping in

I told her I had plans. My plans are hanging out with my dad at our house until the near year and staying far away from whatever happy family games...

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I feel like I'm being the deceitful one now by telling my dad a secret and then not admitting it to my mum. My dad has previously said that he'd...

so I get why she'd keep it from him, but I am just so very tired of this wilful lack of communication between my parents.. AITA for going behind her...

Children — even adult children — often become emotional messengers after divorce. When one parent asks them to keep secrets from the other, it creates a loyalty bind. Family therapist Dr. Joshua Coleman explains, “When parents pull children into their conflicts, it forces them into roles they were never meant to play.”

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In this case, both parents appear to be leaning on their son emotionally. His mother asks him to keep secrets. His father expresses unresolved anger and even makes threats about future partners. That leaves the 18-year-old carrying emotional weight that isn’t his to carry.

At the same time, he is legally and emotionally old enough to decide where he wants to spend New Year’s Eve. Avoiding a situation that feels uncomfortable is a valid choice. The key issue is not whether his mother can date — she absolutely can — but whether he should be responsible for managing her disclosure strategy.

A healthier path forward might involve clear boundaries with both parents. Saying, “I don’t want to be in the middle,” and refusing to carry messages or secrets could reduce long-term stress. Therapy, individually or as a family, could also help untangle years of unresolved tension.

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Here’s the comments of Reddit users:

Many users supported the poster, praising his honesty and exhaustion

AlluringAllura − NTA. In fact, your parents are the As. There are three people involved in your parent's devorce; not two, and that's not fair to you. Your dad is...

You're old enough now to decide whether or not you want a relationship with your mother. If you didn't want to attend the party in the first place, your dad...

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But I can at least sympathize with him wanting you to have a relationship with your mom. I think he thought he was doing the right thing. Your mom is...

the divorce was actually a happy event for me since I no longer had to put up with her using me as her own personal diary. She's using you as...

My own mother tried this crap with me, and you're right to be uncomfortable with it. That isn't normal or healthy. You don't exist to do her emotional labor.

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That must have caused you so much anxiety for you to be that relieved about the devorce. You can tell your father that's why you didn't want a relationship with...

My mum admitted she was with L's dad after I'd become friends with L (who wasn't aware I didn't know about the relationship), but asked me not to tell my...

This is also not normal, and that's why she didn't want you to tell your dad. She tried to manipulate you into being friends with her partner's daughter because she...

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She's very selfish and doesn't care about how any of this affects you. OP, I'm so sorry you're going through this. I know Reddit suggests this a lot, but there's...

I definitely recommend getting some online counciling. I bennefitted a lot from it with my parents' devorce and I think it might help you too.

Mine helped me learn to set boundries with my parents and helped me with my self-esteem. Wishing you the best and a happy new year, OP.

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Edit: So there's a lot of dicussion about whether or not OP's dad is an A for also threatening to hurt OPs mom's partners. There's a lot of speculation that...

I didn't read that far into the threat initially. Without anymore context given, I figured it was something said a long time ago in a fit of anger; an emotional...

That doesn't make it okay, but at least understandable, especially given that OP states he doesn't believe his dad has anger issues. Only OP knows when and how it was...

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I'm not trying to paint the dad as an innocent party in all this though; far from it. But there's been a lot of speculation about why OP's father isn't...

Kind of a, "Well if he's made threats and isn't over it 7 years later, maybe that's a sign the mom was actually a victim in all this and needed...

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If she was worried about her/her partners' safety, that would justify asking OP to keep secrets from his dad. But we've learned some new things since then in other comment...

1. OP's mom conveniently divorced him right after he finished paying off her student loans. 2. OP's mom didn't specifically ask for a custody agreement.

She just assumed OP would live with her, and got mad at OP wanted to live with his dad instead of being her live-in therapist.

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3. His dad is unable to get over the devorce because his mom will periodically pop over to his dad's house and they will, "act how they used to.

" While maybe in her head, she's doing him a kindness by, "staying friends," I can't help but to interpret this to mean she wants to play happy family with...

and wants the benefits of being in a relationship with him but still be able to have outside partners. She won't give him space to let her go.

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Given the situation with OP being tricked into friendship with L, it seems apparent the OPs mom is capable and willing to manipulate others,

so keeping a relationship with the dad gives me the impression that it's a manipulation tactic from the mom. She's dangling a carrot in front of him, making OP's dad...

None of this is normal. OP is right, his dad could benefit from therapy too. And while threats aren't okay, I can't get behind the idea that OP's mom is...

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TaysteePotayto − NTA she should never have involved you and you shouldn't be forced to spend time pretending everything is hunky dory.

Also are there no cases of Corona where you are? If there are you shouldn't be going to social gatherings anyhow.

Servantofbosco − NTA. Ya know, now that you are eighteen, and somebody tells you they expect you to go somewhere or do something *that you don’t want to do*, YOU...

(Because, in the real world, you may have actually MADE plans, people make plans *all the time,* , (not just to get out of whatever little family drama being foisted...

Although this will be awkward the first few/many times you say it. Good luck easing yourself out of the mom and dad dynamics. Their relationship is not something you should...

thebitchinwitch − NTA, but both your parents are As. 1) Your mom should not be loading you up with the emotional baggage of a secretkeeper.

It's not your responsibility to cover for her. She's an adult and needs to handle her own s__t, not manipulate you into doing it for her. 2) While your dad...

he is being unfair to you by making those threats and putting you in a position to feel guilty about being honest if a confrontation were to occur. He also...

aznbabeeo − Both your parents are assholes. You shouldn’t have to lie. NTA. Your mom is sketchy I think everyone sees that, but it’s been 7 years since the divorce...

or no right to try to attack other people your mom is with. Sounds like a really unhealthy dynamic where your parents shouldn’t try to be friends.

Others felt the situation was far more complicated than it seemed

Alpha-and_Omega − ESH. Mostly your dad. If your parents have been divorced for 7 years, your dad needs to get over it and stop worrying about what your mother is...

AnonymousMowse − While I don't think you should be put in the middle of issues between your parents, your mom can date whoever she wants and can choose to tell...

If you didn't intend to keep the secret she asked you to keep, you should have told her you are uncomfortable with keeping secrets for her and left it at...

ESH. You're parents are divorced and your dad needs to let go and stop worrying about what his ex wife is doing.

thin_white_dutchess − Esh. Threats of violence after 7 years? Really? Your mom ghosted, but dad doesn’t believe in divorce, so it sounds like there weren’t any options there.

Mom shouldn’t have made you keep secrets. This is just a hot mess, but it’s over. I’d be hiding my parents from my ex too if he was making threats...

Dude, everyone here needs to get over it. Everyone. No one is getting back together. Talk to your mom or not. But let go of the past.

unicorndontcare69 − YTA, Here’s why, you told your Dad a secret. However it isn’t a secret, it’s your mom’s life. Your Dad has NO RIGHTS to know who or what...

You say they are friends BUT your Dad is still confused about the divorce, but what is really happening is your Mom was honest with herself and wasn’t in love...

If your Dad’s family still treats her like family and she still acts like it; that’s the dynamic of that particular relationship that THEY partake in. Unfortunately you don’t understand...

You have to remember YOU are the family link. Good on your Mom for keeping friendly with non genetic family members. And if you don’t want to go somewhere with...

You are mad at your mom for something you don’t understand why she did what she did, so ask. If you don’t want to know that’s fine too,

BUT at some point you have to put boundaries on your Mom since you don’t want to know about her life in the way she is sharing it

and put boundaries on her in general because she seems to think that you two are good and you kinda resentful of her.

She can’t fix what she doesn’t know. As for your Dad, if he got mad at your mom for being with a guy then he needs boundaries too, but that’s...

Your mom’s boundaries is don’t tell your Dad because he is no longer her partner! Your whole perspective is from a wounded child who gravitate towards the parent who has...

and that makes the most sense to you, but the real world people divorce for all kinds of reasons and you should really find peace by opening up your mind...

I’m not saying you should forgive your mom but I am saying you should start looking at life from an adult perspective not the wounded child of divorce one you’re...

AdImpressive82 − YTA. Your motive was selfish. As you said it was for your own benefit. You knew how he’d react and you played him to get your way.

If you didn’t want to go, tell him you prefer to spend itime with him. Your mom though, really really really sucks for telling you to keep secrets from your...

Edit: to clarify, I’m not saying you shouldn’t have told your dad. The moment your mom told you not to tell him, you should have told him. Your motive for...

And a few commenters added blunt or reflective takes

CookieBomb6 − Going against the grain here, but I grew up with a similar situation. Your dad is TA. Which makes you a soft YTA. Your mother is entitled to...

They're divorced. Whether or not your father agrees with it means jack. All of which I can understand given your fathers reactions.

It actually surprises me and worries me a little that at 18 years old you find the problem is your moms behavior and not your fathers.

They've been divorced for 7 years, he entirely blames her, still isnt over it, and gets angry over her having a new partner? That right there is some majorly controlling...

Hinestly, is it really a surprise that your mother keeps her dating life a secret from a man that has threatened her partners with physical violence?

Or from a man that in 7 years cant seem to have let it go and let her live her own life? Of course she still comes by, she has...

But from what I read there seems to be a good reason she wanted a divorce. Your father sounds very controlling. That's not to say he a bad father, but...

My mother and father had a similar situation. I love both my parents equally, but as an adult I could 100% see that my father was not a good partner...

Even now, more than a decade later, he hasnt completely let go of the divorce he didnt want, shows a tad to much emotion for things involving her life, but...

However we do keep our mothers dates and such to ourselves because we know our father wouldn't take the news well and, well, it's no longer his business.

You dont have to partake in the party if you dont want to, but you need to stop sharing her personal life with your father. Especially given his reactions and...

Never assume he "wouldnt actually do it" when he makes threats. Someone that cant let go of a person in 7 years because he blames them and still makes threats...

Also, be honest with your mother. It sounds like shes trying to stay a part of your life. You need to talk with her. At 18, you should be starting...

shes still a single woman that is allowed to date and she shouldnt have to stop because it makes her adult child uncomfortable. She shouldn't have to live the rest...

Let her know that you dont like being in the middle and maybe hear her out on why she doesn't want her dating life shared with her ex. It sounds...

I would also ask your father to stop sharing his opinion with you on his ex wife, because I feel like theres a good chance that he has effected your...

Hinestly, the man sounds like he could benefit from some therapy. Bottom line, your father is not a victim of anyone but his own behavior.

Your mother is entitled to her personal privacy. Have a real conversation with both parents on how you no longer want to be middle man.

RasaraMoon − NTA, but your dad isn't innocent in this. As devastating as it is to have your mom divorce him with no chance of reconciliation, he needs to accept...

If he was angry on your behalf about the party including your mom's new partner, that's one thing, but if he's just angry in general that your mom has moved...

You can't expect "happy family Christmas" involving both your parents when your dad is still holding a torch for your mom. And your mom is a MAJOR a__hole for leading...

She also needs to back the f off with introducing you to her new partners if she's going to jump from relationship to relationship so frequently, and stop pushing you...

disjointedOne − Different POV. I wonder why your mom felt the need to “just start dating around”. Yeah, it’s easy to say she was the AH, but something about your...

obsessive and controlling attitude just smells wrong. You probably do not know the entire story. Yeah, no one should keep secrets. ..but your mom isn’t the worse AH here, your...

Dustin_Riley − NTA. It really sounds like your mother isn't a decent human being that is deserving of respect.

messwithintelligance − ESH- Honestly this sounds like it could have been my situation if I had believed my biological fathers lies.

My biological father abused my mother verbally and physically, she started to go out with friends to get away from him and met my step-dad.

Shortly before she met my step-dad my mom and biological father separated for a short time, and then when she met my step dad she made it clear that she...

He claimed she cheated on him and was sleeping around, even though they didn't start dating until after they were separated. As soon as your parents separated your dad had...

You are such an AH for telling your father that after your mother told you not to. Regardless of why you think it was ok, your mother was not being...

She and your father are not together anymore, she can date whoever she wants, and if she doesn't want your father to know that's her business.

She isn't cheating on your dad at this point. THEY ARE NOT TOGETHER! BEING DECEITFUL MEANS SHE IS CHEATING ON HIM THEY HAVE BEEN DIVORCED FOR 7 YEARS!

You and your father both need to grow up, if you think your father is so great then just cut your mom from your life, never talk to her again.

It will break her heart but she will be safe then from two males who obviously want to cause her problems.

This situation highlights how messy divorce can remain long after papers are signed. An 18-year-old trying to avoid one uncomfortable party uncovered years of unresolved tension between his parents. While some believe he had every right to tell the truth, others argue he crossed a boundary that wasn’t his to cross. At the center of it all is one exhausted young adult who simply didn’t want to be the messenger anymore. If you were in his position, would you have kept the secret—or told the truth to protect your own peace?

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