AITA for doing nothing for the child my ex-wife had from her affair even now that I have primary custody of our kids?

Picture a quiet suburban evening, the kind where the hum of a lawnmower lingers in the air, but inside one home, tension crackles like static. A father, juggling the weight of a broken marriage, faces a relentless plea from his ex-wife: to embrace a child born from her infidelity. His refusal stirs a storm of guilt, anger, and moral questions, pulling readers into a saga where loyalty, betrayal, and innocence collide.

This Reddit tale unravels a messy family dynamic, where the past casts long shadows. The man’s choice to distance himself from his ex’s child, while fiercely protecting his own kids, sparks heated debate. Is he heartless or justified? With vivid emotions and a thorny dilemma, this story hooks us, urging a closer look at where responsibility begins and ends in a fractured family.

‘AITA for doing nothing for the child my ex-wife had from her affair even now that I have primary custody of our kids?’

Six years ago I (36m) learned that my ex-wife (37f) was cheating on me. I ended our marriage and filed for divorce but everything was delayed because she was pregnant. Once her child was born and it was established that I was not the biological father, my name was removed from the birth certificate and the bio father's name was added.

They were a couple at this point. Throughout we shared 50-50 custody of our three children together. My kids were old enough to figure out what happened. I got them therapy eventually after my ex resisted putting them in therapy and we had talks about everything. I did my best to reassure them that they didn't need to hate anyone for me or reject anyone on my behalf.

But their relationship with their mom never recovered and the relationship with her youngest never existed from what I know. The affair partner took off three years ago and since then my ex-wife has requested that I take an active part in her child's life because I'm so involved in our kids lives.

Each and every time she has made this request via parenting app I have firmly said no. She tried to take full custody of our kids because I refused to include her youngest and a judge told her it didn't work like that and I did not have a legal responsibility to her youngest child.

I ended up with primary custody of my children a year ago because my ex-wife made some very bad decisions and not only lost the house she was staying in but lost her job, had no savings and overall was left with next to nothing. After this happened her requests for me to do something for her child increased.

I ignored them for the most part and did as I was instructed to do by my lawyer and replied to the ones that indicated I was responsible for ensuring the child was adequately cared for. Those I did say no to and reminded her there were places she could go if she needed help feeding her youngest.

Our kids still must go to her house for her every other weekend visitation and they hate it. Which angers my ex because they have zero relationship with her youngest and it angers her that I won't ensure that all of the kids have a good relationship and that her youngest knows what it's like to have a fatherly figure.

She said she would allow me to adopt her child if I was willing. Then she said she would at least like me to do something. To express some care for her child. Send birthday and Christmas gifts, send food occasionally, offer to let her child join in for some activities. I do none of this.

I have asked my kids if they would like to spend more time with their half sibling or give gifts but they have always said no and they told me when they can make the decision not to go to their mom's house they won't have anything to do with her child either. My ex has become more angry because there are things her child has missed out on and apparently they ask more questions now.

Some of her messages on the app are now extremely hostile. There's nothing I can do about this for the moment but they're saved so if we end up back in court they can be shown. She told me I act like I'm such a good person but I treat a child like s**t. I don't feel bad exactly.

I know I would have a very hard time being around this child and they're innocent so I prefer to stay away and not let them feel the weight of my issues with their mother and how they were conceived. But maybe that makes me an awful person. I know at the end of all this is a child who has only got my ex and nobody else and the child is innocent like I stated. Which brought me here to ask... AITA?

Navigating the fallout of infidelity is like walking a tightrope over a canyon of raw emotions. The OP’s refusal to engage with his ex-wife’s affair child is a lightning rod for debate, pitting personal boundaries against a child’s innocence. On one side, the ex-wife demands inclusion, arguing the child needs a father figure. On the other, OP stands firm, unwilling to blur lines of responsibility for a child tied to his pain.

This standoff reflects a broader issue: how do blended families heal after betrayal? According to a 2021 study by the American Psychological Association, 60% of remarried couples face challenges integrating stepchildren, often amplified by unresolved trust issues (APA Study). The OP’s detachment, while harsh, shields him from reliving past wounds, yet leaves a child in the crossfire.

Dr. John Gottman, a renowned relationship expert, notes, “Trust is rebuilt through consistent, empathetic actions, not forced obligations” (Gottman Institute). Applying this, OP’s ex-wife’s demands may undermine genuine healing, pushing him further away. Her hostility, documented in heated messages, only deepens the rift, making cooperation feel like capitulation.

For solutions, experts suggest clear boundaries and professional mediation. OP could explore family therapy to address his children’s strained ties with their half-sibling, fostering empathy without direct involvement.

Heres what people had to say to OP:

Reddit’s peanut gallery didn’t hold back, dishing out candid takes with a side of humor. Here’s what the community had to say:

Uglym8s − NTA - she need to put this much energy into ensuring that the child’s actual father is contributing

Just-a-mum − NTA. Tell your wife to direct her anger towards her child’s father.

[Reddit User] − You’re NTA given the very complicated situation, but my heart goes out to that kid at the same time. They have been dealt a very bad hand starting out in life.

Morrigan-71 − NTA.. She said she would allow me to adopt her child if I was willing. How generous of her to offer you something that would make you responsible in every possible way for the child she conceived with the man she cheated on you with.

DCDipset − Not the a**hole. I just hope that your kids don’t treat their half sibling poorly when they are around them. That lil one didn’t ask for this mess yet they’re a c**ualty of it and that could set their life on a path of chaos and hardship.. Again, you’re not the a**hole in all of this.

iknowsomethings2 − NTA. YOUR children are your responsibility, not her affair child.. You’re looking out for your children and doing what is best for them/. Your ex should go after her ex if she wants involvement. It’s not your problem.

Creative-Ad-145 − NTA why are you feeling bad , you did nothing wrong. But you should talk to your lawyer to make her stop harassing you because it will eventually effect your health. Here everyone on reddit will agree you did nothing wrong but her constantly asking you. It will make you feel guilty

InformationTop3437 − You are not an ahole, but I can't stop thinking about he poor kid that has no other fault than being born. Also it's not his fault he has stupid parents. :( His life is doomed and i can't help it, but i feel pity for him. :(

Traditional-Trade795 − NTA - not you child not your problem. imagine if some ex you had no contact with for 10 years suddenly reached out asked for cards for their kid that you have nothing to do with. insane... not only is she entitled as f**k, she is refusing to sleep in the bed she made for herself. sounds like you have been more then gracious and a mother losing primary custody means usually she has catastrophically failed in her duties..

Dapper_Violinist9631 − Poor kid. You’re NTA and you actively distancing yourself so that kids not collateral damage is being mindful of the child and that they are innocent in their conception.. If wife lost custody of your kids is other kid in danger too?

These fiery opinions light up the thread, but do they capture the full picture? Or are they just Reddit’s classic mix of sass and snap judgments?

This tale leaves us grappling with a child’s innocence caught in adult conflicts. OP’s choice to step back, while legally sound, tugs at the heartstrings, raising questions about moral duty versus personal healing. What would you do if faced with a similar plea from an ex? Could you find a middle ground, or is distance the only path? Drop your thoughts below and let’s unpack this tangled web together.

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