AITA for refusing to lie to my kids for my ex?

Family truths are often far more complex than the simple narratives we wish to preserve, especially in the aftermath of a broken marriage. In this story, a father stands firmly by his refusal to mask reality for his children—even when pressured by his ex to do so. His choice to speak truthfully stems from a desire to let the kids form their own, unbiased opinions, rather than building their lives on half-truths or fabricated tales.

Emotions run high when family legacies and trust are on the line. Here, a single conversation has the power to shape the children’s perceptions of loyalty and betrayal. Amid a co-parenting arrangement that demands honesty, a difficult revelation—originating from their grandmother—forces a father to confront the painful past head-on, all in the name of preserving trust and fostering genuine connection with his kids.

‘AITA for refusing to lie to my kids for my ex?’

My ex (31f) and I (30m) have two kids together (10 and 9). Our marriage ended when I learned she was cheating on me. The guy she was cheating with is now her husband. They had been

hat was confirmed. And once that was confirmed and we had attended 3 co-parenting classes we were shared physical and legal custody. This means the children spend 50% of the time at both mine and my ex's house.

In June of this year my kids told me that their grandmother (ex's mom) had told them that their mom and her husband are cheaters and broke up our family and that's why they (their mom and her husband) hate me. I didn't lie to the kids and say it wasn't true.

But I did talk to them and assured them they didn't need to hate anyone on my behalf and I told them it didn't have to change things. But it has. The kids have brought it up to my ex repeatedly since they learned this and they call my ex's husband mean now.

The kids didn't have the greatest relationship with him before this but now they don't want to spend time with him and they say he's really mean. My ex was furious with her mom when she realized what her mom had done.

She had blamed me for telling them beforehand (though not to my face). Now they she knows what happened she has been telling me to lie and say they never cheated and they met after we broke up. I refused and she said I'm a failure as a parent.

I'm hurting our kids, ruining their family and that I should love our kids more than I hate her and make sure they can love and respect her again. I said I won't lie and that I have already talked to our kids and I refuse to cover for her.. She has fired more and more accusations of me mistreating our kids.. AITA?

Navigating the murky waters of co-parenting after a painful divorce is never easy. Experts underline that creating an environment of honest communication is essential for healthy child development. When a parent opts for candor—even about painful family histories—it offers children the stability they need amid uncertainty. In cases of alleged infidelity and contentious split families, the truth, though harsh at times, helps in building resilience and trust over time.

Research in family psychology consistently shows that children do best when they can rely on one consistent narrative across both households. Parents who uphold honesty help their children develop critical thinking and emotional resilience. Avoiding the temptation to rewrite history, even at the expense of temporary discomfort, often lays the groundwork for longer-term trust and understanding in the parent–child relationship.

The role of truthful communication is not just ethical but clinically recommended. According to Dr. Laura Markham of Aha! Parenting, “Honesty—even when it’s difficult—is the cornerstone of trust in a family. Kids notice when stories don’t add up, and that can undermine their confidence in the adults who are supposed to protect them.” This guidance supports the idea that avoiding inconvenient truths only postpones the inevitable discussion, often at a higher emotional cost later on.

Maintaining an honest dialogue is also a key strategy in preventing the erosion of credibility between parents and children. While it may complicate relationships in the short term, setting the stage for truthful interaction ensures that the kids grow up with the skills needed to manage conflicting views and navigate complex family dynamics. This consistency becomes especially important as children mature and form their own moral compass.

These are the responses from Reddit users:

Here are some perspectives from the Reddit community—candid, pointed, and reflective of how many feel about protecting the truth in family matters. The community overwhelmingly supports the father’s stance, highlighting that deceiving children to protect adult egos not only damages trust but can also lead to long-term confusion.

Many point out that while the truth may hurt now, it ultimately fortifies the bond between parent and child, ensuring that the kids learn to question inconsistencies and value honesty over expedience.

charmer143 − NTA. You didn't tell the kids yourself, and you did make it clear that you don't want them to hate your ex and her husband because of it. But kids aren't dumb just because they're young. They can form their own opinions and determine what's right or what's wrong for themselves.

Your ex just has to accept that her actions have consequences and that you won't be doing her any favors by covering up something she did (which was her betraying you and ruining your marriage, by the way).

SDstartingOut − NTA; let's face it, the kids are 10 & 9, not 3 & 4. I'm pretty sure at this point, they would be old enough to realize

prodrvr22 − NTA.. ...she said I'm a failure as a parent, I'm hurting our kids, ruining their family... She needs to look in the mirror. You didn't cheat, you didn't ruin the family, you didn't fail as a parent, you aren't the one hurting your kids.. She did. And she needs to own up to it.

fiestafan73 − Your ex wife sure is projecting. She’s guilty of everything she accused you of. Frankly her problem should be with her mother. You did the right thing by not dragging your kids into her mess and assuring them they don’t need to hate anyone on your behalf. The cat is out of the bag, and you attempting to lie to them now is only going to make them distrust you too. NTA.

angry-always80 − Nta here is the thing about secrets they always come out. Your kids respect and trust you enough to not lie to them. If you do your ex’s bidding and lie the kids will realize they can’t trust either parent. Your kids need therapy. Not to make them reconcile with mom but to let them talk through their feelings.

In a short amount of time they lost the family they had, had a new person become part of their life, and now found out their mom is the reason their world got turned upside down. Tell your ex instead of doubling down on the lie, which won’t work, try putting in the effort and time to rebuild trust with her children.

Remote-Passenger7880 − NTA. Don't lie to your children and risk your relationship with them just to protect her feelings. The truth would have been found out eventually.. now they don't want to spend time with him and they say he's really mean.

Is it possible that them saying he's mean has nothing to do with your past marriage? The oldest is 10. I can't see a kid that age repeatedly calling someone mean unless they're being mean *to the kid*. Is stepdad actually mean to them?

[Reddit User] − Are you able to have your kids full time? I’m not saying never with mom, but she’s horrible. What she is doing is very narcissistic, it’s going to ruin your fragile children. The ages they are at right now are crucial for how they learn and perceive things while growing into mini adults. This woman is a horrible influence.

You need to be even more honest with your kids than you previously were. She wants to gaslight your children to not hurt them, she wants to lie to them so they don’t hate him…. I don’t know him and I hate him.

Sorry not sorry, get your kids away from them. Tell someone, any therapist or psychiatrist or psychologist will say this is not okay for children and her time needs to be limited. She should see them weekends, she’s brainwashing your kids.

katg913 − NTA. But if your ex is using the mistreatment card, you might want to tell your lawyer and start keeping track of her behavior.

Having-hope3594 − NTA because your kids would figure out sooner or later that you’re lying if you do what your ex wants.  You did not make that revelation, their grandmother did. But your kids need to know they have a parent they can trust to tell them the truth. Also, if you don’t make a big issue of it, the drama may die down.  

Jerseygirl2468 − NTA She's the one who cheated, and her mother is the one that told the kids, how is any of this your fault?

In conclusion, this family saga lays bare the challenges inherent in co-parenting when emotions and past betrayals run deep. The father’s refusal to lie—even under pressure—speaks to a commitment to transparency, fostering a respectful and genuine relationship with his children.

What steps would you take when faced with a difficult truth in your family? Join the discussion and share your thoughts on how honesty can shape our futures.

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