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AIBU?

Share your dilemmas and get honest opinions from other Mumsnetters.

AIBU to want to tell colleague’s wife about his workplace affair?

320 replies

Berrylipshade · 12/03/2026 20:28

Name changed for this.
I’m watching an affair play out in work. Been going on for a long time. Everyone knows. Not at all discreet. Today it was bad, cuddling, neck stroking, hands in hair, in plain sight of a few of us, and leaving for “lunch” together.
He is a horrible arrogant man. His poor wife & young kids.
I hear him telling clients about his wife and comes across as so devoted. He’s a pig.
The one he’s shagging is single, but an obnoxious flirt. The whole thing just makes me so annoyed.
i wish I could not care.
but i keep plotting to leak this to his wife.
is that wrong?

OP posts:
Berrylipshade · 12/03/2026 21:13

Thanks all…
maybe tomorrow I will wake up and just not be so angry about it. I don’t know why I’m this bothered. But today I’d just had enough of it.
ill sleep on it.

OP posts:
Rhaidimiddim · 12/03/2026 21:14

My ex had two workplace affairs. I would very much have welcomed being told.

Studyunder · 12/03/2026 21:14

properidiot · 12/03/2026 20:33

I'd be complaining to HR about inappropriate behaviour in the workplace. His wife may already know or have suspicions. I'm not sure it's right for you to tell her though - is she a stranger to you or do you know her?

This

SunnyRedSnail · 12/03/2026 21:16

@Berrylipshade Id normally say stay out of it but if he is rubbing it in people's faces then I'd feel so sorry for his wife and let her know.

Or maybe she already knows???

Mumandcarer80 · 12/03/2026 21:16

This reminds me of that Coldplay couple. They were openly having an affair colleagues knew. Just like that couple were outed these two will be as well. But if I was the wife I would want to know. She will feel a right fool if she finds out his colleagues knew and never told her.

tierdytierd · 12/03/2026 21:18

Same happened at a place I worked. They sound exactly the same type aswell.
he went on holiday with his wife, when they got home somebody had posted printed copies of many/all of their horrid email exchanges through their letter box addressed to his lovely wife.
he vanished from the company.

Mintearo7 · 12/03/2026 21:22

Same thing happened at my old work, they were caught and reported to HR. But of course, because he was more senior and a man, she was asked to leave! Even though she was single and he was married. So don’t predict how it will all pan out.

LlynTegid · 12/03/2026 21:28

Talk to them, at least they might stop the public displays.

Imbrocator · 12/03/2026 21:31

Tell her if you can. Preferably anonymously. She deserves to know. It’s awful to be the wife and realise that everyone at his work knows and no one respected you enough to tell you.

OhFeyreDarling · 12/03/2026 21:33

I did this in my workplace a year or so ago, married manager having an affair. I anonymously told his wife via messenger, she asked for proof but I had none really, I just told her what they do and that they go on lunches together. No idea if she believed me or just didn't want to, either way the affair carried on and he's still married.

Maybe it was a shitty thing to do I don't know, but he's the one having the affair. I'd like to think she's still lining up the ducks though, I do hope so

But as far as I can see on here, not one woman who was being cheated on says they're glad no one ever told them

Frostyontheline · 12/03/2026 21:38

I would hate this. Their openness would make me complicit. I could not stand by and watch, without action. Yes the wife might be happy with an open relationship, she can do nothing if she is.

Vigorouslysnuggled · 12/03/2026 21:43

This is why men continue to get away with bad behaviour because no one does anything about it

Vigorouslysnuggled · 12/03/2026 21:45

Rhaidimiddim · 12/03/2026 21:14

My ex had two workplace affairs. I would very much have welcomed being told.

Bastard!

Coconutter24 · 12/03/2026 21:46

Berrylipshade · 12/03/2026 20:35

I know deep down I wouldn’t, but it’s ramped up this last month. I think partly because I can’t stand this man, he’s always really shitty to people he deems “lower” than him.
today a few if us were saying how they shouldn’t be touching like that where people are able to see. They didn’t kiss, but you’d only touch someone like that romantically.

You need to make sure you tell his wife for the right reasons and not because you dislike him and want to get one up on him

Mosman2020 · 12/03/2026 21:47

Berrylipshade · 12/03/2026 20:55

I like this

He could probably have you charged with harassment if he found out it was you be very careful
It’s usually the messenger that gets shot

LiviaDrusillaAugusta · 12/03/2026 21:49

Imbrocator · 12/03/2026 21:31

Tell her if you can. Preferably anonymously. She deserves to know. It’s awful to be the wife and realise that everyone at his work knows and no one respected you enough to tell you.

Then she’s left wondering who would send that and therefore who knew about it, whether her family and friends know etc. That’s going to make her paranoid on top of everything else. Anonymous notes are disturbing and cowardly.

MrsJeanLuc · 12/03/2026 21:54

Iwiicit · 12/03/2026 20:32

Keep well out of it. Not your circus, not your monkey. Just get on with your job professionally, if you value it.

“The only thing necessary for the triumph of evil is for good men to do nothing.” – Edmund Burke
Evil thrives not because of monsters, but because good people remain silent. Burke’s timeless warning urges us to act, to speak, and to resist passivity when injustice appears.
#EdmundBurke #DoSomething #SpeakUp #ResistEvil #MoralResponsibility #EthicsMatter

Sassylovesbooks · 12/03/2026 22:00

If you told this man's wife, even anonymously, is there any chance he could find out it was you?

From your update, it's pointless speaking to HR or anyone senior.

If there's zero chance that telling this man's wife could be traced back to you, then you should tell her.

If there's even a vague possibility that you could be found out, then I would stay out of it completely.

It's grim behaviour but it appears he has previous for being a cheating rat, so it's probably not a surprise he's at it again. Sadly, the more times he 'gets away' with it, the bolder and frequency of these affair will happen. What I will say is, eventually he will become too complacent and become cocky and sloppy...his wife will find out herself.

Frostyontheline · 12/03/2026 22:02

Might add i have little no patience for this bullshit. If they wanted it to be discreet then why the hell are parading in front of everyone. Actions have consequences. And this it!

Anyahyacinth · 12/03/2026 22:11

Somehow let her know so she has a chance not to waste more of her life being attached to this creep 💯%

Smilesinthesunshine · 12/03/2026 22:14

Please let her know. She deserves to find happiness with someone decent one day.

tsmainsqueeze · 12/03/2026 22:16

Berrylipshade · 12/03/2026 21:13

Thanks all…
maybe tomorrow I will wake up and just not be so angry about it. I don’t know why I’m this bothered. But today I’d just had enough of it.
ill sleep on it.

I understand why you've had enough , i witnessed an affair in my workplace many years ago ,there were moments when they didn't seem to care how awkward they made us feel and we all knew their spouses too.
It blew up ,there was an anonymous communication and hell was let loose.
I was very young at the time but if i was in that position again i would let their partners know if i could get away with it .

GreenCaterpillarOnALeaf · 12/03/2026 22:17

I mean I would only do it if I could do it anonymously, or if I couldn’t I’d only do it if I was leaving the job. I understand how you feel though it would enrage me as well.

Woodfiresareamazing · 12/03/2026 22:18

Berrylipshade · 12/03/2026 21:13

Thanks all…
maybe tomorrow I will wake up and just not be so angry about it. I don’t know why I’m this bothered. But today I’d just had enough of it.
ill sleep on it.

I'm another one voting tell her...

LiviaDrusillaAugusta · 12/03/2026 22:19

MrsJeanLuc · 12/03/2026 21:54

“The only thing necessary for the triumph of evil is for good men to do nothing.” – Edmund Burke
Evil thrives not because of monsters, but because good people remain silent. Burke’s timeless warning urges us to act, to speak, and to resist passivity when injustice appears.
#EdmundBurke #DoSomething #SpeakUp #ResistEvil #MoralResponsibility #EthicsMatter

It’s hardly evil or unjust! It may be unpleasant but that’s a tad extreme 😊