AITA for refusing to treat my “daughter” the same as my sons?

A proud dad just handed his straight-A son the keys to a brand-new pickup for his 18th birthday and Ivy League acceptance. He promised the same deal to his younger boy—if grades stay high and trouble stays low.

The catch? His ex heard about the trucks and demanded one for “their daughter,” the child he learned a decade ago isn’t his. He’s already on the hook for $5,000 monthly child support and full college costs until she’s 21. He told her no way. Now his parents call him cold-hearted.

‘AITA for refusing to treat my “daughter” the same as my sons?’

The oldest son turns 18, ranks top ten, and scores Ivy League letters:

My oldest son recently turned 18, will be graduating in the top ten of his class, and received several acceptance letters including one from an Ivy League university. He’s a...

My youngest son was envious of his older brother and asked me if I will be buying him a new car when he turns 18. I answered if he keeps...

Divorce hit over ten years ago after paternity bombshell:

I divorced my ex over 10 years ago after I found out the girl wasn’t mine. Because of my high salary and her status as a stay at home mother,...

In short, I have to pay child support for all 3 kids even though only 2 are mine. If they go to college, I have to pay for their full...

Obviously I am happy to pay for my sons but not so much to be forced to pay for the girl. She’s a couple of years younger than my oldest...

Ex demands a truck if the girl hits milestones:

When his mother found out about the truck and what I said to my youngest son, she called and asked if I will be getting my “daughter” a car too...

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We argued a bit until I told her to go bother the real father and leave the legal one alone. My parents still treat the girl as a grandchild so...

I countered that I’m being punished every month when I send almost $5,000 to a kid who’s not mine. I love my parents but I made it clear that I’m...

My parents said that they’re disappointed in me which hurts me more than I’m willing to admit to them. I can’t understand why they can’t see it from my point...

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Paternity fraud leaves scars that courts rarely heal. The dad’s rage is valid—studies show men ordered to pay for non-bio kids suffer higher depression and resentment (Journal of Family Issues). Yet the girl remains blameless, caught in adult fallout.

His parents’ bond with her is natural; grandparents often maintain ties post-divorce. Clinical psychologist Dr. Kyle Pruett notes, “Cutting off a child you once raised feels like grief—denying it doesn’t erase the history” (Fatherhood Institute). Still, extra gifts aren’t owed.

The ex’s demand reeks of entitlement after years of court-sanctioned profit. Legal expert Lisa Green advises, “Document every payment; explore modification if fraud evidence exists” (Family Law Quarterly). He’s met obligations—lavish bonuses are his call.

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Practical step: Redirect parents’ guilt—they can fund her car if they wish. Therapy for the sons prevents spillover bitterness. He protects his wallet without dehumanizing the girl in front of them.

Let’s dive into the reactions from Reddit:

The thread split hard—some cheered the dad’s boundary, others slammed his icy tone:

Many backed the hard no, citing fraud and finances:

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Electrical_Promise89 - If you pay $5000 a month your ex can save for a car from that. Expecting extra after defrauding you for years is unreal.

[Reddit User] - NTA. The legal system sucks, and screwed you over. That doesn't mean you have to be a willing participant in your b__ch ex-wife's attempt to extort more...

BeachinLife1 - So let me get this straight. You are paying 5K a month for that one child? Even if it's not, your ex should have been saving some of...

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Others pitied the girl and called out dehumanizing language:

Inside-War8916 - Esh. That poor f__king girl. She didn't do anything wrong and you're using her as a game piece.

Training_Hat7939 - This poor young woman is going to have a lot of therapy after this.

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rcburner - NTA for not getting your "ex-daughter" a car, but YTA for completely dehumanizing your sons' biological half-sister.

Honest_Weird_9715 - ESH poor girl. The way you talk about her is disgusting.

Skeptics smelled rage-bait:

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sclsom - Has nobody considered that this is pure rage bait? The account is 2 hours old.

Practical advice flowed:

No-Insurance8288 - with that much child support, she can easily save up to buy her daughter a car in no time.

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ssddalways - Honestly don't think you are wrong on your feelings... but she done nothing wrong your ex did.

The dad draws a firm line: sons earn trucks, the non-bio girl gets court-mandated cash—nothing more. His parents ache for the grandchild they still love, but he’s done bleeding extra for betrayal. Would you go beyond the judge’s order for a child who isn’t yours, or is resentment fair game? Let it rip below.

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