AIW for breaking up with my girlfriend even though she didn’t cheat?

A widower thought he’d found love again, only for it to unravel in one shocking night. After losing his wife of 35 years, a 56-year-old man reconnected with an old friend, promising to support her if she left her cheating husband. She took him up on the offer, ready to start a new chapter together. But the day before moving in, she casually mentioned wanting to sleep with another man, throwing everything into chaos. Beyond that, she brought it up again, testing his limits.

The twist is, he never explicitly forbade her, but he also never approved. Was he wrong to end things so abruptly? This story dives into a messy clash of emotions and principles, where trust and communication take center stage. Let’s unpack this drama and see what went wrong.

‘AIW for breaking up with my girlfriend even though she didn’t cheat?’

A fresh start seemed within reach.

(56m) was married for nearly 35 years. I married young. My wife was my best friend. She died 18 months ago. I reconnected with a female friend I used to...

She felt she was trapped. I told her if she ever left him I would take her in. She's beautiful. Her kids are adults. A few months go by and...

Things took a turn when she mentioned another man.

A day before she is to move in she, for some reason, tells me about a younger guy that has been pursuing her. Tells me if she didn't get with...

I told her if she really wanted to do it, she was a grown woman and can make up her own mind. And if she was going to do it,...

She acted, and he responded decisively.

Well she decided to spend the night with him the day before moving in with me. She will see me in the morning. She left and I got started packing...

Sucks for her. She asked me what I was doing. I told her I was packing up a cheating whores things. She started crying and said that nothing happened yet...

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She has nowhere to go. I told her to call him up to pick her up but she can't stay here. I went into my house and locked the door....

I feel I shouldn't have to tell her to be faithful and instead of doing it behind my back wasn't as bad as doing it in my face. I told...

The story didn’t end there, with updates adding clarity.

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This happened several days ago and she keeps blowing up my phone. I don't answer. I thought I had a good loyal girlfriend. Jokes on me. So am I the...

Edit. We talked about it before. She asked me if I was ok with it. I told her no, I didn't like it. I never specifically said I would throw...

I loved her enough to probably get over a one time thing because she was honest. As she was walking out the door is when I found out he was...

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That sealed the deal. Besides I got an STD check with her before, considering her husband's track record. I'm not willing to do it again. Quit saying I basically gave...

Edit 2.. Before this happened, she asked me if I was ok with this. I told her no, I was not ok with this. We were exclusive, or at least...

I did not. I also didn't forbid a grown woman from doing what she wanted. She did what she wanted. I did what I wanted. I guess she thought I...

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Just because I didn't specifically say that she would be gone from my life. A one night stand was worth losing me over. Or at least she thought it was....

We both made what we thought were the best choice for each of us. Her son is on his way to talk to me. He is married with 2 kids...

I also told him not to bring her with him. I'll let you know how it goes. I don't know what he thinks will happen but he's a good dude....

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UPDATE. I talked to her son and showed him this post. Damn was he pissed. He cut off his dad for cheating on his mom and treating her like s**t....

I begged him not to. He said she can't stay with him. There are a couple of one bedroom apartments where he lives. The car she was driving the past...

But after that she is on her own. I still love her and don't want anything bad to happen to her. I just don't want her anymore. He said she...

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That's all I have and don't expect anything to change. I'll drive over tomorrow and get her the apartment. Gonna be a s**t show when her son gets home. She...

An abrupt breakup like this often hides deeper issues about trust and communication. The man’s strong reaction—stems from his clear stance against infidelity, shaped by his late wife’s loyalty and his girlfriend’s past with a cheating husband. Yet, his vague response to her intentions created a gray area, leading her to assume she had some leeway. This miscommunication fueled the conflict, as he expected fidelity to be a given.

Her actions, however, raise red flags. Openly discussing a fling with a married man, especially after condemning infidelity, shows a lack of empathy for her partner’s values. As relationship expert John Gottman notes, “Trust is built in very small moments” (The Seven Principles for Making Marriage Work, 1999). Her transparency, while honest, shattered that trust by ignoring his boundaries. The revelation that the other man was married only deepened the betrayal, as it mirrored the pain she claimed to despise.

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Society often debates whether intent equals action in relationships. Some argue that planning to cheat is as bad as doing it, while others stress clear communication to avoid assumptions. Both parties here failed to align on expectations. Moving forward, they’d benefit from a candid discussion about boundaries and consequences before making big commitments. A counselor could help navigate these emotions.

His decision to still support her financially shows compassion, but he needs space to heal. She, meanwhile, must reflect on her choices and rebuild trust, not just with him but with her family. This saga underscores how fragile trust can be when communication falters.

Here’s what people had to say to OP:

The online community jumped into this drama with a mix of support, criticism, and confusion.

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Some users firmly supported him, seeing her actions as a clear betrayal, especially given her hypocrisy.

Fair-Ad-7258 − NTA Your relationship was over when she brought up sleeping with a younger married man twice. You’re even helping her for a few more months, sorry this didn’t...

ronnerator − NTA for breaking up with her but YTA for showing her son this post.

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Others felt both sides mishandled things, highlighting the communication breakdown.

CressIndependent3554 − If people were calling you an a**hole for this, it’s because you left out critical information… or you add to the story in the edits to make yourself...

You made it sound like indifference. She asked if it was ok… you said she was an adult and could make up her own mind… you didn’t say it was...

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You can’t blame people for interpreting that as you being a poor communicator if you don’t accurately tell the story. That said, I’m sorry you are in this s**tty situation...

rejectallgoats − I don’t really see why you think you are on some kind of moral high ground here. You were an affair partner, you helped break up that woman’s...

Yet you think something because the younger guy is married that she is more wrong? Literally every one in your story sucks. You are all wrong, and you all deserve...

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A few comments brought levity, poking fun at the messy situation.

DevilinDeTales − Wow! The son is certainly having mixed feelings. Mom screwed herself over

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[Reddit User] − Pay my rent instead. I never cheated on you. F**king wild that you’re getting her an apartment.

Several users were baffled by the timeline and relationship dynamics, asking for more details.

Ace_boy08 − INFO Your post is confusing to me. She was married to her cheating husband and living with him, and you pursued her during that time? You said if...

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Or did you offer her a place to stay as a friend, or did you offer her a place to stay as a condition of being involved with her? Or...

Were you guys doing this whilst she was married. If not, where was she living at the time? How long did you guys date for? Why would you offer to...

So this woman is a hot mess and in a volunerable and desperate time and you offered shelter and a car so she could escape the husband in return for...

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FullFrontal687 − . She felt she was trapped. I told her if she ever left him I would take her in. She's beautiful. Her kids are adults. A few months...

Great. The way you are describing this, you were talking with a married woman while she was still married - happily or unhappily. And you tell her if she ever...

At this point, it sounds like you were not dating - you were offering her a safe place to crash. "A few months go by and she leaves him, she...

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or is taking you up on your offer of an extra room? What happens between then and when she mentions the younger guy? Did you two date? Have s**? Establish...

shontsu − So you dated for a few weeks? Invited her to live with you? She told you she wanted to sleep with someone else? She slept with someone else?...

You're now offering to pay several months rent on a new place for her? ​ ​ I really don't think you're ready to date man. Forget this woman, just. ..in...

Dry-Clock-1470 − So you and her? Didn't date? And she never actually moved in? You offered a friend a place to live if she left her cheating ex (if she's...

This tale is a stark reminder of how trust and communication shape relationships. The man felt betrayed by his girlfriend’s plan to sleep with another man, while she argued she hadn’t crossed the line since nothing happened. Both share blame: he didn’t spell out the consequences, and she misread his stance, ignoring his values. Yet, his choice to help her financially shows he still cares, even if he’s done with the relationship. The online community offered a range of takes, from backing his decision to pointing out everyone’s flaws, highlighting the complexity of it all.

What do you think of his choice to end things? Should he have given her another chance? If you were in his shoes, how would you have handled it?

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