AITAH for breaking up with my fiance because she fought for custody of her kids?

A 36-year-old man ended his three-year engagement after a drunk call from his fiancée’s ex-husband revealed she fought a bitter two-year custody battle to keep their kids from him, despite his cheating being the cause of their divorce. Fearing she might do the same if their future marriage falters, he’s moving out, but her distraught pleas and her mother’s defense have him questioning if he’s too harsh.

This relationship bombshell dives into the murky waters of trust, past betrayals, and future fears. Was the man right to walk away to protect his future kids, or did he overreact to a painful chapter his fiancée has moved past? Let’s unpack the drama and see what Reddit had to say!

‘AITAH for breaking up with my fiance because she fought for custody of her kids?’

The breakup stemmed from a shocking revelation:

I(36m) have been in relationship with my fiance(36f) for three years now. She has two kids that she share custody of, with her ex-husband. We are supposed to get married...

The ex’s drunk call opened a Pandora’s box:

I have met her ex-husband and they seem to have good relationship and co-parent very well. I never really knew much about their divorce, other than that they drifted apart.

He drunk-dialed me about a week ago to tell me that she ruined his life and good luck with her. I called him next day to meet me and he...

The ex shared details of their divorce and custody fight:

He cheated because she refused to have s__ with him for 3 years. When she found out she understandably divorced him. But she went further and tried to gain full...

but it cost him a lot of money and stress. He showed me all the documents and legal notices. She was just dragging it and making it as painful as...

The OP confronted his fiancée and ended the relationship:

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I could never guess because of how well they interacted with each other. I get that he was a cheater but I understand that not having s__ for 3 years...

Most importantly I want to have kids too and I dont want to fight for 2 years for them if things went south. I confronted my fiance and asked her...

She admits that she was wrong and has learned from her past mistakes. But its too risky for me to marry a woman who can even think of taking kids...

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He clarified his stance in edits:

I am moving out by end of this week. She has been distraught, begging me to not do it. Her mother even called me(I have only spoken to her once...

and told me that she was just being a "mama bear and protecting her cubs"(her actual words) and kids do well with mother anyways. I dont agree with this sentiment....

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Edit: I am getting too many common questions so I will answer them here. I went to his apartment to see the documents, he started collecting them to show his...

His cheating is wrong, I understand it does not mean I condone it. But it does not justify my ex trying to get full custody.. People here are saying that...

I just dont want to be in his position, I should not have to fight an expensive battle to see my own kids. My ex has shown me that she...

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People saying that I should talk to her, I have. She did not need to do the custody battle, she could just have settled it out of court for the...

Edit 2: People who are up my bottom(ass) for using the word "unalive"(Suicide), I am sorry you feel that way(go f__k yourselves). It not like I have seen youtubers complaining...

Again if you guys are so hurt by it(your heads are so far up your ass), I sincerely hope you guys can find some professional to talk about it(and have...

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This story exposes the raw tension of trust and past actions colliding with future plans. The OP’s decision to end his engagement after learning of his fiancée’s aggressive custody battle reflects a deep fear of repeating her ex’s ordeal, especially since he wants kids. His choice prioritizes self-protection, valuing his future role as a father over a relationship now clouded by doubt, but it also risks dismissing her growth and their three-year bond.

The fiancée’s past actions, while extreme, stemmed from betrayal and hurt. Family therapist Dr. Susan Heitler notes, “Anger-driven decisions in divorce, like punitive custody battles, often reflect emotional wounds rather than a person’s core character” (From Conflict to Resolution). Her admission of fault and current amicable co-parenting suggest she’s learned from her mistakes, but the OP’s concern about her capacity for vindictiveness is valid, given the high stakes of potential custody disputes.

That said, the OP’s swift exit may be premature. Relying heavily on the ex’s narrative—delivered with emotionally charged documents and a history of cheating—lacks the full context of their marriage’s breakdown, like why she withheld intimacy for three years. A single conversation with his fiancée may not have been enough to explore her side or assess her growth fully. His decision to leave without pursuing counseling or deeper dialogue suggests he was already questioning the relationship.

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Moving forward, the OP should reflect on whether his fear outweighs the trust built over three years. If he’s set on leaving, clear communication about his concerns could provide closure for both. If he’s open to reconsideration, couples counseling could uncover the full story and rebuild trust. Either way, his boundary against risking a future custody battle is a legitimate stance, but a more balanced inquiry might have clarified if the risk still exists.

Take a look at the comments from fellow users:

Reddit tackled this breakup drama with heated debate, some backing the OP’s self-protection while others slammed his hasty judgment or the ex’s motives. Here’s every comment, grouped by perspective!

Most supported the OP’s decision to leave:

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roxywalker - “NTA. But I’m going to assume that this was actually the final nail in the coffin, not the first. It would appear that you may have seen some...

Now that you have their side of things, it’s confirmed most of what you probably suspected all along. Good for you for moving on quickly and not wasting each others...

SeparateDisaster2068 - “NTA .. I think you’ve dodged a bullet.”

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Some questioned the ex’s story and the OP’s judgment:

Some_Ad_4033 - “I’m sorry, I’m going with ESH. Lack of communication all around. Sounds like young, dumb people who didn’t know how to properly navigate life and traumatic situations and...

It sounds like there’s been a lot of growth on all sides, and I actually can’t believe this would be the sole reason for you to leave her. There are...

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Practical_Reindeer23 - “Sounds like the ex husband is still hung up on the ex and created a divide between the two of you. You gave him exactly the opening he...

I'm sorry but none of you sounds like mature stable adults and I feel bad for the kids and the upheaval you are all putting them in. All the adults...

MerakiMe09 - “Why wasn't she having s__? Was it because she had to take care of him like a 3rd child? Was it because he showed no effect towards her,...

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That's his story. it doesn't make it true. People who use ‘my partner didn't want to have s__,’ so I cheated, are weak and ignorant. You should have left her...

Gangreless - “I get that he was a cheater but. .. YTA for this attitude And why didn't she want to have s__ with him in 3 years? Did you...

I wouldn't want my kid to be with my husband if he cheated, either. She admits she might have gone too far and she's learned from it. Personally sounds like...

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Reddit User - “Just. .. Be sure. Did you ask about the no s__ thing? This could be important. I divorced my ex largely due to s__. From the outside...

He could've said I left because I expected too much out of him and was uptight. We didn't have s__ because he was heavily addicted to porn, couldn't get an...

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He also did nothing except go to work and was my adult child. Sounds very different with details is what I'm trying to get at it. In his world, he...

Now I didn't try to keep the kids away. But I also came from a severely broken home with no father and didn't want that s__t my kids. If you...

Not the right move but we all make mistakes. She was cheated on and felt betrayed, she wasn't at her best. You say she's been great with you and no...

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Because I grew as a person after our divorce and thought long and hard into my part of the downfall of my first marriage. If you would ask my ex...

Some of it true, yes, but much of it was his perception that everyone is against him and his refusal to take responsibility for his life. We fought constantly and...

My husband now would say I'm loving, supportive, fun to be around, and very much in love with him. That when we are upset with each other, I ask for...

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I also chose a much better partner the second time because I'm older and learned from my mistakes. I would look at what you know to be true. Since you've...

She is good to you. She is good to her kids. I would let her tell you the full story if she hasn't already and then make the judgement call....

Others criticized the OP for siding with the ex:

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aprize303 - “yta. this guy cheats on his wife and calls her new man years later to complain about how she treated him when HE destroyed their family. and people...

Minkiemink - “OP listens to an ex. A guy who gets plastered enough to call his ex wife's fiancé to drunkenly babble. Instead of hanging up like anyone normal would...

OP decided to listen to the drunk and behind his fiancée's back meets with the angry drunk, sitting around all ears, nodding his head open eyed while the drunk does...

Quite the betrayal. Never asks her why no s__ in 3 years. (Trust me, there is a good reason. ... the ex being a drunk would be a good one,...

or having more and calmer conversations with the woman he has been with for three years, does know and supposedly loves, OP just abruptly breaks off the engagement. .... Because...

Ends a 3 year relationship because of one conversation with a cheating drunk who ruined his own life, but blames his terrible choices on his former wife so then goes...

The manly man that is OP who had to have had one foot out the door already, then runs off like a skunk without another word. Sounds like her picker...

She doesn't know it yet, but OP did her a favor. She dodged a bullet. I hope she gets over him soon. What a loser. YTA

Edit: And apparently the fiancée IS having regular s__ with OP for 3 years. If not, why did OP stick around? But hey. ..yeah. Break up on behalf of the...

Reddit User - “So not having s__ is an excuse for cheating now? Just break up or divorce at that point. I think YTA for agreeing with that.”

Some doubted the ex’s narrative or logistics:

vasilisa74 - “Unrelated but I have a bridge in Brooklyn to sell to you - with full documentation.”

dischdunk - “So ex just happened to show up for your discussion with all the court documents? I know I carry those around with me everywhere, but thought I was...

alwaysonthemove0516 - “Anyone else stuck on the part that he showed me all the legal documents and notices part of this? So they met up and the ex just happened...

Others suggested deeper issues in the relationship:

Soulful_Aquarius - “Sounds more like you have been looking for an excuse to end the relationship.”

Used_Mark_7911 - “ESH In 99% of divorces, both parties contributed to the downfall of the marriage. The same is true in this situation: my guess would be their relationship was...

It’s clear her ex-husband is fully capable of being vindictive and petty himself. They have been divorced for years and managed to develop a good co-parenting relationship which is in...

He chose to blow that up, which is definitely not in the best interest of the kids. It’s also not in the best interest of the kids to cause the...

IMO her ex husband’s ‘drunk dial’ was intentional. I’m not saying you don’t have a lot to think about but I do think you are making a hasty decision and...

This engagement-ending drama is a stark reminder that past actions can cast long shadows over future trust. The OP’s choice to walk away from his fiancée over her custody battle reflects a deep fear of losing access to future kids, but his quick exit raises questions about whether he fully explored her side. Should he stand firm in his decision, or could more talks have saved the relationship? What’s your take on this trust-busting breakup? Share your thoughts below!

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