AITAH for breaking up with my gf because she’s friends with a guy who cheated with her?

How much past baggage is too much in a new relationship? One man learns a shocking detail about his girlfriend’s history with a close male friend, raising questions about trust and boundaries. The revelation changes everything overnight.

Many believe full honesty builds strong partnerships. When key details stay hidden, discomfort grows fast. This case examines discomfort with ongoing friendships tied to infidelity. Choosing to walk away sparks debate over fairness and second chances.

‘AITAH for breaking up with my gf because she’s friends with a guy who cheated with her?’

The discovery happens unexpectedly during a casual gathering.

My gf has this male friend, let's call him Mike.. Mike is recently divorced. The other night, I was hanging out with some of my gf's friends. My gf wasn't...

One of her friends brought up Mike, and how the divorce has been hard on him. Another friend said it was his own damn fault for sleeping with gf's name....

I asked for more details, and turns out Mike slept with my gf while he was married, his wife found out, and then they divorced. This happened about a year...

After processing the news, confrontation leads to a decisive breakup.

I talked to my gf the next time I saw her, I took a couple days to digest the information. I did text her that I needed some time for...

See, she's still close friends with Mike, as they hang out regularly, both group and 1 on 1. I wasn't crazy about, but I figured I should trust my gf,...

She asked why and I told her the truth. I told her I don't like that she's friends with Mike with this new information, and that I wasn't gonna tell...

My gf yelled at me, and said that if I asked, she'd would stop hanging out with Mike. I still decided to break up, but to be honest I don't...

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AITAH for my reason to break up with her and AITAH for not asking her to cut off Mike, or giving her a chance to?. It's a bit late now,...

The rift stems from undisclosed history involving infidelity. The girlfriend participated in an affair with a married friend, then maintained close ties without informing her new partner. Concealment and ongoing contact erode trust when revealed.

The boyfriend feels betrayed by omission and uneasy about boundaries. The girlfriend defends her choices, offering compliance only after confrontation. Both face mismatched expectations around transparency and past actions’ impact.

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Relationship counselor Esther Perel highlights that “secrets in relationships often protect more than they harm, until discovered.” Here, withholding reshaped perceptions. Rebuilding requires full disclosure early.

Partners benefit from discussing deal-breakers upfront. Evaluate compatibility on values like fidelity. Walking away preserves self-respect when core discomfort persists, prioritizing personal boundaries.

Here’s the comments of Reddit users:

Social media users overwhelmingly supported the breakup decision, viewing the hidden history as a major red flag. Discussions centered on trust, morals, and future risks. Reactions stressed self-protection.

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A large portion declared the original poster clearly in the right, criticizing the ex’s choices.

SquareSpare8723 − Ex-girlfriend is a homewrecker. Move on and find someone better.

Illustrious_Pain392 − I can promise you right now if you have began with 'I know what you did with mike. if you want this relationship to work, you need to...

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you took that whole conversation out of the equation and dropped her, hence her insistence that she'd have dropped him as a friend, 'if you asked'.

you dodged a bullet my friend. this woman is a low class woman. the fact that she was willing to sleep with a married man is ample evidence that she'd...

1568314 − My gf yelled at me, and said that if I asked, she'd would stop [telling you when she was ] hanging out with Mike. Ftfy. NTA If she...

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Or she wouldn't have slept with a married man in the first place! Tbh I wouldn't care if she offered to put a tracker in her vagina. I wouldn't be...

TwoBionicknees − NTA. It's her friend, knew he was married and helped destroy a marriage by having s__ with him and then proceeds to be and stay his friend in...

She doesn't give a f__k about cheating, so faking not being friends with him because you ask doesn't change s__t, she's a cheater and is happily friends with a cheater.

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She also let you hang around with Mike and her with them all knowing and not telling you, and even that alone would make me break up with someone. She's...

mofodatknowbro − NTA. If she'd sleep with a married man then she is obviously a low quality individual who you should not waste your time dating.

Others reinforced the moral concerns and praised avoiding ultimatums.

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[Reddit User] − Definitely NTA. If you were friends with a formerly married woman that you helped home-wreck she would be concerned about it too. Too many memories in that...

Popular_Error3691 − Nta. She's scum who was a willing participant in breaking up her friends marriage. Hanging out after is just icing on the shithead cake.

CelebrationOne5522 − Actions have consequences. She helped him cheat and lie to his wife. She continued to see him after his divorce.

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She never told you about their affair and continued to spend time with and console him 1 on 1 for his divorce, which is a result of his infidelity with...

l3ex_G − Nta do you want to be with someone who would help break up a marriage ? She’s for the streets and so is Mike

Status_Purchase_7904 − Nta, it also says enough about your ex she was not up front about it, she has no morals you want in a long term partner,

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and the moment you say anything about it you become controlling, which is nonsense ofcourse. But that’s what they will try to gaslight you with.

Dry_Ask5493 − NTA. she had affair with her married friend 2) she still hangs out with him 1 on 1 3) she never told you any of this need to...

she claims she would’ve dropped him as a friend for you but she never even should’ve put herself in that position if she had respect for you and was loyal...

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Overall, this tells me that she’s a very shady individual and has questionable morals. You did the right thing and dodged a bullet.

lastgateway − NTA, your ex is a s__t and is probably f__king Mike as we speak.

Trekkie63 − NTA for both. I’ve had enough real world experience to know cheaters gonna cheat. Cut your losses and move on.

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DaveSmithSucks − Hear me loud and clear, F__K NO

[Reddit User] − NTA because that's a big deal. How you gonna hang out with someone who cheated with a married man. Even if she knew you didn't like the...

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If you didn't know and you asked her to stop seeing Mike, she probably would've gaslight you for even thinking such a thing. She clearly has no moral compass.

This account reveals how hidden past actions can shatter current trust. Choosing to end things protects against ongoing unease, especially without prior disclosure. Declining to issue ultimatums avoids potential manipulation.

Values alignment matters in partnerships. Transparency about significant history prevents later shocks. Would you stay if someone offered to cut contact after revelation? How important is full honesty about past indiscretions early on?

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