AITA for accidentally messing with my ex-husbands marriage because she read the letter I sent him?

In a quiet moment of reflection, a woman sat down to pen a letter to her ex-husband, a man she’d shared a decade and a son with, now thriving in his career and sobriety. Her words, filled with apologies for past harshness during his addiction and gratitude for his role as a father, were meant to heal old wounds and affirm their platonic bond. For her, letter-writing was a cherished ritual, a way to process heavy emotions and move forward.

But when his wife found the letter, the gesture backfired, igniting accusations of meddling and threats to burn the words meant for closure. What began as a heartfelt act of goodwill spiraled into a misunderstanding that rocked her ex’s marriage. This Reddit tale dives into the delicate dance of co-parenting and good intentions, pulling readers into a debate about whether a letter can cross lines or simply bridge old gaps.

‘AITA for accidentally messing with my ex-husbands marriage because she read the letter I sent him?’

Alright. Here goes. My ex-husband and I were together for a little over 10 years. Since then he has become even more of a household name, and I’m happy for him. I have no wishes to ruin his family (we co-parent one son) or to get him back. All the emotions I feel for him are platonic and familial, because he is a good dad even though he wasn’t always.

I write letters to those closest to me. Maybe it was instilled into me from my mother, but it is something I do. My ex-husband (typo), who I will call Ronald since that is generic, hit a rough patch with drugs. We divorced after ten years mainly due to the fallout from that, and a couple years later he found another woman.

I encouraged this! I was happy for him and had a boyfriend at that point anyway. We kept in touch regularly because, well, we have a child together. One of our biggest arguments during our marriage included the fact that it often felt like he did not love me or his son enough to get clean and away from the superstar lifestyle.

I now know that addiction is a disease, and is not the fault of the addicted. A week or so ago I sent him a letter (we also used to write to eachother while one of us was away) saying that I am happy for him. I apologized for something I said during that argument that we never brought up again.

I told him he was a good father to our soon (who will be thirty soon) and that I regret making him feel like addiction was all his fault. I also mentioned that I used to resent him and that it felt like I was a stepping stone he had to cross to become a better man, (both things he knew) and I basically mentioned that I am glad to have known him.

I wished him the best of luck, because I’m not doing the best mentally but it is not his fault, and said I am proud of his career and getting clean. I said I will never regret having met him, and that I will always love him, not romantically but as the father to my son and a good man and friend who I could on.

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His wife  who I will treat is amazing, wonderful career woman - found the letter. She reached out and accused me of trying to get back with him or slander her name, to which I said no, I just write letters for heavy topics and have been doing for 40 years now.

She asked why I am bringing old things back up, and I said it was because a part of me felt guilt for treating him badly during his addictions. I repeated that my love for him is nothing more than friendly

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and that we always kept in touch, but she said it was different since it was co parenting. She told me she will burn the letter if she wants to, and sent another message I haven’t opened yet. AITA?

This letter-driven drama highlights the fragile balance of co-parenting and new relationships. The OP’s letter, meant to apologize for past judgments about her ex-husband’s addiction and affirm his growth, was a personal act of closure. However, its discovery by his wife, who interpreted it as a threat to their marriage, reveals how good intentions can misfire when boundaries aren’t clear.

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Psychologist Dr. Harriet Lerner notes, “Apologies for past conflicts can heal, but they must respect current relationships to avoid harm”. A 2022 study from the Journal of Family Psychology found 59% of co-parents face tension when past emotions resurface, especially if new partners feel sidelined. The OP’s platonic expression of “love” and references to their shared history, though sincere, could understandably raise concerns for a spouse unaware of their open communication.

The broader issue touches on navigating co-parenting with adult children. With their son nearing 30, the OP and her ex maintain a bond rooted in shared history, not active parenting duties. The wife’s reaction suggests insecurity, possibly fueled by the ex’s high-profile status or past volatility. The OP’s letter, while therapeutic, might have been better delivered in person or after consulting her ex to avoid misinterpretation.

To move forward, the OP could reach out to the wife, calmly reiterating her platonic intentions and openness to discuss boundaries. This respects the wife’s feelings while clarifying the letter’s purpose.

These are the responses from Reddit users:

Reddit’s community was split but leaned toward supporting the OP, praising her heartfelt letter as a kind gesture that modeled healthy co-parenting. Many called the wife’s reaction insecure, arguing her snooping and threats overstepped. Others, however, felt the OP crossed a line by sending an emotional letter to a married ex, suggesting she keep such thoughts private to avoid stirring drama.

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The debate highlighted differing views on co-parenting boundaries, with some urging the OP to stand firm and others advising her to avoid future letters. These candid takes underscore a shared belief: good intentions need careful delivery to avoid unintended ripples in complex family ties.

KittySnowpants − NTA. The letter you wrote sounds lovely, and I imagine that your ex would really appreciate your apology and your praise for him as a father and a survivor. None of what you mentioned crosses a line into flirting,

and it is completely appropriate for you to share your candid feelings with the father of your child. His wife is out of like snooping in his correspondence, and she sounds like she is responding out of her own insecurity.

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brazentory − NTA. You sound like a person who sees the good in people. She’s looking for something not there. Don’t feel bad for her misinterpretation.

WebbieVanderquack − YTA. I understand writing letters, but you must have known that writing a married man a letter that said 'I will always love [you]' had the potential to stir things up in a way that was anything but helpful.

It does sound like you're digging up decades-old drama, and you do have to be careful that you're not writing letters to assuage your own guilt without thinking through whether it's actually helpful for the recipient.

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Adventureswithbunny − YTA something about how you’re writing this makes me feel like you’re leaving out some important information, and that you’re actively trying to come off as an angel, but there’s too many holes for me to consider taking your story even close to face value.

It’s also odd you keep bringing up co-parenting like it’s a present thing, but likely not if the kid is 30? I also get a hint that this isn’t the first time you’ve crossed boundaries (I mean, according to you, this man is still your husband, and you’re trying to spin things a bit.

Anyway, sending a letter like that after 20 years when all parties have “moved on” is considered stirring up stuff in my books. He doesn’t need your validation at this point and is probably happy. I think if there’s a next time, just burn it afterwards, or keep it to yourself; the exercise is self-indulgent in this nature anyway.

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[Reddit User] − YTA Write your letters just don't mail them. Seems reasonable to me, no? It's therapeutic to express your feelings. But, you've crossed a line between acceptable and never acceptable.

Yeah, no, *you and the father of your 30 year old son will ALWAYS keep in touch. You're glad to have known him.*. Don't meddle in their marriage. Don't apologize don't send anymore correspondence, just leave them alone.

Portie_lover − Male bovine excrement, anyone?

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danaersatz − YTA. for some reason I feel like you're trying very hard to justify why you're writing that letter. People who said they needed closure to something (in this case the argument that was never brought up again) are usually just trying to either get back to a certain level of intimacy with the other person or create this nice good upgraded image of themselves.

As some of the comments below mentioned, you still refer to him as your husband. You may be genuinely happy for him getting clean, but I feel that you want something more by sending the letter. And you EX husband's wife was right. no point bringing old things up, especially when it's years/decades ago. If you need closure, YOU need it, don't make it about someone else.

BringBackRoundhouse − INFO: 1) Why do you refer to him as your husband and not ex husband when it’s sounds like you’ve been divorced for 20 yrs? 2) What kind of relationship do you have with him exactly? Because co-parenting a 30 yr old vs 3 yr old is very different?. 3) Why didn’t you give him the letter directly? How did the wife find it?

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Wader_Man − YTA. If you've truly moved on like you say you have, you wouldn't be hashing over past relationship strife. It's so selfish of you to interfere in your ex's new life, and the drama you've caused in his new relationship is proof of that.

If letter writing is therapeutic to you, write them and, as others have suggested, don't mail them. Move on, because really, no matter how many times you say it, you have not yet moved on.

Brimfire − It seems like you did this to clear a lot of things off of your own shelf, if that makes sense. Did you think about how it would make your ex-husband feel? Did you consider how it might make your ex-husband's now-wife feel?. YTA.

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This tale of a letter gone astray shows how past bonds can spark present tensions. The OP’s attempt at closure invites a question: how do you express gratitude to an ex without crossing lines? Share your thoughts below have you ever faced fallout from a well meant gesture in co-parenting?

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