AITA for letting my twins call my boyfriend dad?

A young mother finds herself caught in a heated co-parenting clash when her twins call her boyfriend “Dad” in front of their biological father. The situation spirals when her ex unleashes a tirade, accusing her of undermining his role, while his fiancée struggles to connect with the kids.

At the same time, the twins’ silence at their father’s house raises red flags, hinting at deeper issues. The mother’s boyfriend has been a steady presence since pregnancy, earning the twins’ affection, while their biological father grapples with his limited time. Beyond that, the story sparks questions about what makes a parent and how children navigate complex family ties. Let’s unpack this emotional rollercoaster.

‘AITA for letting my twins call my boyfriend dad?’

It all starts with a young mother building a life with her twins and her devoted boyfriend.

I (25f) and my boyfriend (28m) have been together for 3 years and have been living together with my twins (3m) for 2 years. Me and their father (26m) have...

The arrangement with her ex is straightforward, but her boyfriend’s involvement adds layers to the dynamic.

We have a custody agreement that they go every other weekend with him on Saturday with me dropping them off and picking them up but last weekend my boyfriend had...

For context, the twins don’t know life without my boyfriend we have been together since I found out I was pregnant and he was there for all the ultrasounds and...

and read all the books with me and was there for the labor. He loves them like his own and in my eyes they’re as much his kids as mine...

Things take a turn when the twins’ words spark a confrontation.

Back to it, he was picking up the kids for me (this is not the first time), and they had called him daddy to get his attention while he was...

but while I was at the airport my ex called me screaming saying how undermining and disrespectful it was that the twins called him daddy while and they wouldn’t speak...

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but then he started complaining about custody which was originally his idea because he was working a lot and saying that it was my fault because my boyfriend is spending...

The drama escalates with the ex’s fiancée, and the mother grapples with her decision.

He then started on how it was “not right” that the twins were so comfortable with my boyfriend but his fiancé couldn’t hug the twins without bribing them with something,...

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Later when I got home his fiancé started calling and texting me which I ignored because she’s been known to have a terrible attitude toward me even when I’m just...

and he loves it but would understand if I told them to stop but I don’t know I love that my twins call him dad I feel like he’s earned...

Update: I would like to thank you all for the support and advice that you have sent us, I sat down with my boyfriend and we read through the comments...

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and were especially grateful for the comments from people who were and are in a similar situation because it give some insight on how to handle this all. There are...

First one of the biggest things I saw in the comments was the custody, we don’t have a written legal agreement on the matter but my boyfriend is going to...

Secondly, I saw a lot of comments on the mental manipulation that may be happening to the twins I have been in therapy since I was twelve because of depression,

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and anxiety with a family history of mental illness like bipolar so therapy has always been a thing that I wanted my kids to be in when I felt would...

but the comments on what meant be happening at my ex’s house I think me and my boyfriend will start looking at therapist together for the twins. I haven’t talked...

I’ve taken him off of the pickup list at their daycare and I’m going to be texting him tomorrow because I don’t feel like them going over there is the...

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That’s all I have for today but I will try to keep you guys updated on what’s happening, thank you again for all the love and support.

What happens when a child’s heart chooses a parent, but biology and custody agreements complicate the picture? This story exposes the raw challenges of co-parenting in blended families, where emotional bonds don’t always align with legal roles.

The mother faces a dilemma: her twins naturally call her boyfriend “Dad” because he’s been a constant, nurturing presence since their birth. Meanwhile, their biological father, absent for their first year, struggles to build a connection during limited custody time. Dr. John Gottman, a renowned relationship expert, notes, “Children thrive on consistency and emotional safety, which often come from the adults who show up daily” (The Gottman Institute, 2020). The boyfriend’s involvement—from ultrasounds to late-night feedings—has earned the twins’ trust, while the ex’s sporadic presence leaves gaps.

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Beyond that, the twins’ silence at their father’s house is concerning. It suggests discomfort, possibly due to an unfamiliar environment or strained dynamics with his fiancée. The ex’s anger and accusations reflect insecurity, but his approach—yelling and blaming—may further alienate the twins. The twist is, forcing the children to stop calling the boyfriend “Dad” could confuse them and disrupt their sense of stability.

Here’s the input from the Reddit crowd:

The online community didn’t hold back, rallying around this mother with a mix of support, concern, and practical advice. Their comments reflect a range of perspectives, from affirming her boyfriend’s role to raising red flags about the ex’s household.

The community overwhelmingly backs the mother, emphasizing that “Dad” is a title earned through presence, not just biology.

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AvalonWood − NTA. Your boyfriend is the Dad that your twins have known, he’s always been there and they have made the choice to call him Daddy.

I would be concerned about the twins behaviour around your ex and his fiancée, they seem like they don’t feel comfortable and your ex should NOT be forcing them to...

Sorry, but the ex needs to put on his big boy pants and realise that he hasn’t made the effort and that has affected his relationship with his kids. Don’t...

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electrolitebuzz − I can think of at least 3 friends and old classmates who grew up with a stepdad and were still in a good relationship with the biological dad...

but he can't expect you to forbid your children to call your boyfriend "dad", it's actually very healthy for them to see him as their father. If their father and...

Commenters flagged the twins’ silence as a potential sign of discomfort or worse, urging the mother to investigate.

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SFyr − NTA. 'Dad' is a title you earn by your actions in the eyes of your children, not by your blood relation to them.

KrofftSurvivor − NTA - Dude didn't even bother coming around until they were a year old. Of course he's not ~instantly daddy~. And now he sees them twice a month...

Because if a pair of healthy, normal active, three year olds are not speaking at all in his home, there is something deeply wrong here. Is your custody agreement through...

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In your shoes, I would be writing down the date and time of every interaction, whether it is a phone call and in person, meet up or a text, and...

You need to take this to court, because the children refusing to speak while in his care is a very bad sign, and he and his fiancé's specific complaints suggest...

Go after child support and request supervised visitation with a step-up plan, based on the fact that your children do not speak while in his home and ask that the...

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Some offered actionable advice, like documenting interactions or offering the ex more time to bond.

AnxietyQueeeeen − NTA - Your boyfriend has been there since the beginning. The Ex barely decided he wanted to be in their life. They don’t speak at his house for...

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He needs to put in the work and earn the right to be called dad. Don’t punish your boyfriend because of your ex’s mistake. Don’t let him or his fiancé...

Original-Dragonfly78 − NTA. When the father stated he didn't want to have them, then they hit a certain age. That set this up. Kids bond with who are around them....

How are they supposed to bond. If the kids need to be bribed for anything, they are not comfortable with that person. Offer him more time. Explain that they don't...

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He needs to be there and be an active part of their life. If his fiancee wants to be there too. Perfect. Your children bonded with your BF due to...

A few commenters kept it light but sharp, calling out the ex’s behavior with wit.

[Reddit User] − NTA, And I'm guessing the only reason he went for his little Saturday visit is because of his fiancee. This is textbook deadbeat behavior and it's time...

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Empty_Ad14 − Nta he has raised them since birth and been a dad to them. Their bio dad didn't want to know. them until they were 1 and thr hard...

My daughter called my now husband stepdaddy when she was three (met when she was 2) and when she saw her biological dad he was called daddy he wasn't happy...

Makes more then blood and Dna to be a dad don't make children stop it may confuse a d hurt them. Document and save the texts if he continues and...

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Stormiealways − NTA Ex wasn't there for a whole year, your bf was. Your bf IS their daddy. You might want to ask the twins some questions, though, because the...

Document EVERYTHING, what the ex says/does, what his fiancée says/does, absolutely EVERYTHING. Start collecting evidence for if you need it. Also, use the parenting app.

Icy_Skill_8461 − Dad is the person that raises the children, a father is a penis

The community’s consensus is clear: the boyfriend’s role as a father figure is valid, and the ex needs to step up rather than lash out.

This story highlights the delicate balance of co-parenting and the bonds children form with those who show up for them. The mother’s boyfriend has earned the twins’ love through consistent care, while the biological father’s absence early on and limited time now create tension. The twins’ silence at their father’s house adds complexity, suggesting a need for open dialogue and possibly professional support. What makes a parent in the eyes of a child—biology, effort, or both? How would you navigate this tricky situation? Share your thoughts below!

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