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Share your dilemmas and get honest opinions from other Mumsnetters.

Unwillingly found out about friends’ affair

16 replies

TheBoldPombear · 19/04/2026 18:43

My best friend Pat and I have worked at the same company for almost twenty years. Peter has also worked there a long time, but I’ve only gotten to know him the last couple of years when he moved to my immediate team and is my line manager. Peter went through a divorce last year from Molly, who also works for the same employer, but at another branch. We all have teenage children and live in the same small town. Pat is a single mum. Peter always seemed like a decent guy, and I enjoy working with him and have considered him a friend. He is not Pat’s line manager.

A few months ago I was looking for a work- related item on Pat’s desk while she was in a meeting and I saw a notification flash on one of her devices’ screens. It was a message from Peter saying he loved her and missed her and couldn’t wait to get together again. I did a double take, and Peter saw that I saw as we work in an open plan space.
He took me aside and said that he and Pat had been seeing each other, he is sorry I had to find out like that, but they weren’t ready to share. He said Pat had been feeling guilty at lying to me by omission. I told him I got it that a relationship with a colleague especially after divorce was tricky, and I could see why they kept it quiet, and not to worry and I’d keep it to myself.

Everyone then carried on as normal. I noticed that Pat was overcompensating a little eg making a note of telling me that she felt lonely when her kids went to their dad, when I’m fairly certain she and Peter were spending time together. Then last month I went on a business trip with Peter, and we were chatting about a mutual acquaintance who left his wife after an affair with a colleague. I mentioned that he and Molly were unusual in that their divorce did not involve other people and he started crying and came clean and said that actually he and Pat had started seeing each other while he was still with Molly. He said he knew straight away it was wrong, and that’s why he initiated the divorce. He said he regretted the overlap hugely, and that Molly never knew. He said he planned on coming clean to Molly at some point and I said he should think before doing that as he shouldn’t do it just to ease his own guilt.

I was pretty shocked and can’t remember exactly how the conversation ended. The reason I’m posting today is because I haven’t been back to work since then because of AL. I’ve thought back on conversations and messages over the last couple of years and I’ve realised they’ve both used me to spy on the other e.g. when I went on business trips with Peter (about 3-4 times a year), Pat always texted more frequently, wanting to know if we went out in the evenings after work, and if we stayed late etc. Peter also would ask at times if I heard from Pat when she was away, or if I had plans with Pat on the days when her kids were with their dad.

To be blunt, I’m pretty hurt that Pat, the person I considered my closest friend, seems to be using me as a pawn in whatever games she is playing. I get it that this isn’t about me, but thinking back on all the conversations we’ve had over the last couple of years about how she is lonely, and would love to meet someone… it stings to know that this whole time she’s been shagging the guy who sits across from us in meetings. And I have no idea how I have suddenly found myself as Peter’s involuntary secret keeper, but I don’t have the headspace to be agony aunt to a middle aged man who couldn’t keep it in his pants. Between my 3 kids (one with SEN), my own spouse (who has health issues), my elderly parent that I help look after, my job, and my own health issues, I barely have time to breathe.

So do I just go back to work as normal pretending nothing happened? Do I tell Pat I know? Do I not tell her I know but distance myself from her? That would be hard as our kids are friends and meet regularly. Do I tell Peter I don’t want to hear more about his personal drama? Please give me some outside perspective.

(NC, long time poster )

OP posts:
NeededANameChangeAnyway · 19/04/2026 18:48

Try to keep work and personal life separate Id say. I found out someone I respected was cheating on his wife and I found that very distasteful personally but had to look beyond it to keep things professional at work.

ArachneArachne · 19/04/2026 18:50

I think you’ve partly invited the ‘agony aunt’ thing, OP, but not making it clear you weren’t up for discussing it with Peter after you saw the message and then for actually bringing up the divorce not involving other people on the business trip. He now thinks you’re a safe ear.

awfulapril · 19/04/2026 18:52

Of course this is tedious
Just don't talk about it with either of them

Arlanymor · 19/04/2026 18:56

Peter will have told Pat that you know, why wouldn't he?

I would give them both a wide berth.

yeahyeahyeahyeahyeah · 19/04/2026 18:56

Just explain to him that you don’t want to talk about it, should it come up again.

I’m not sure why it would though?

With regards to Pat: everyone has the right to a private life and they are not obliged to share. I understand that it stings a bit, but she clearly wasn’t ready to share. I would try to not judge, and move on.

TheBoldPombear · 19/04/2026 18:57

ArachneArachne · 19/04/2026 18:50

I think you’ve partly invited the ‘agony aunt’ thing, OP, but not making it clear you weren’t up for discussing it with Peter after you saw the message and then for actually bringing up the divorce not involving other people on the business trip. He now thinks you’re a safe ear.

You are right. I regret that. I guess having considered him a friend, I thought it was jsut conversation. I’ve learned my lesson moving forward. We live in a small town where my workplace is the main employer and so many of my neighbours and other school parents are also colleagues. But I’ve learnt that I need more distance with someone I immediately work with

OP posts:
CatPawprints · 19/04/2026 19:00

I think few people realise just how far the lying and manipulation goes when people have affairs. It's never just keeping one secret from one person. Once it all comes out lots of relationships / friendships are permanently damaged.

OP, this isn't worth your head space. Keep it professional and friendly at work with them both and for the sake of your kids. Change the subject if either broach the topic again. It's not your mess, you don't have to try and make it right or help them analyse their relationship.

Sorry you've been dragged into this. There will definitely be more drama down the line so if you don't want to be involved let things cool a bit now.

ArachneArachne · 19/04/2026 19:07

TheBoldPombear · 19/04/2026 18:57

You are right. I regret that. I guess having considered him a friend, I thought it was jsut conversation. I’ve learned my lesson moving forward. We live in a small town where my workplace is the main employer and so many of my neighbours and other school parents are also colleagues. But I’ve learnt that I need more distance with someone I immediately work with

Well, just tell him you don’t want to talk about it if it comes up again. Put the boundary back in place.

Are you saying that Pat, your longtime best friend, has literally never mentioned the affair to you, in or out of work, despite knowing you now know? That’s far odder.

TheBoldPombear · 19/04/2026 19:09

Arlanymor · 19/04/2026 18:56

Peter will have told Pat that you know, why wouldn't he?

I would give them both a wide berth.

No he hasn’t. He said she’d be mortified.

OP posts:
TheBoldPombear · 19/04/2026 19:11

CatPawprints · 19/04/2026 19:00

I think few people realise just how far the lying and manipulation goes when people have affairs. It's never just keeping one secret from one person. Once it all comes out lots of relationships / friendships are permanently damaged.

OP, this isn't worth your head space. Keep it professional and friendly at work with them both and for the sake of your kids. Change the subject if either broach the topic again. It's not your mess, you don't have to try and make it right or help them analyse their relationship.

Sorry you've been dragged into this. There will definitely be more drama down the line so if you don't want to be involved let things cool a bit now.

Thank you so much for this. It was really helpful to read.

OP posts:
Arlanymor · 19/04/2026 19:12

TheBoldPombear · 19/04/2026 19:09

No he hasn’t. He said she’d be mortified.

And yet he is dating her? What a dysfunctional set up that is then. They don't have honest talks with one another?

In which case I would say definitely give them both a wide berth! What a mess. Sorry you are involved in it, but definitely extricate yourself at this point. And if Pat asks why you have withdrawn you can tell her to ask Peter!

BridgetJonesV2 · 19/04/2026 19:14

I got caught between two friends having an affair (both parents from school). And honestly, I'd run a mile before doing it again. They dragged me into their lies, and took my silence for approval. It ended up making me feel ill when the shit hit the fan as it inevitably does.

Next time, I'd say "what you're doing is entirely up to you, but please respect that I don't want to hear about it or be involved at all".

TheBoldPombear · 19/04/2026 19:19

Arlanymor · 19/04/2026 19:12

And yet he is dating her? What a dysfunctional set up that is then. They don't have honest talks with one another?

In which case I would say definitely give them both a wide berth! What a mess. Sorry you are involved in it, but definitely extricate yourself at this point. And if Pat asks why you have withdrawn you can tell her to ask Peter!

Agreed. Complete mess. Apparently Pat is mortified people may find out she was the OW in his marriage. And yes you are right, I already had decided if Pat ever asks me why I know, I’d tell her to ask Peter.

OP posts:
Arlanymor · 19/04/2026 19:28

TheBoldPombear · 19/04/2026 19:19

Agreed. Complete mess. Apparently Pat is mortified people may find out she was the OW in his marriage. And yes you are right, I already had decided if Pat ever asks me why I know, I’d tell her to ask Peter.

Oh wow, sorry that this has landed at your feet in the way that it has. Not your fault at all and horrible feeling that you were used. I wouldn't ever speak to either of them again unless for something work-related (and even then I would find a way around it if I could). I can understand Pat being mortified, but you reap what you sow right? Yes absolutely, they've made their grubby little bed, they have to lie in it. It's so common in big companies that dominate an area though isn't it?

I remember when my ex-husband cheated and it was with someone we both worked with - all in different departments but the same company. And when I bumped into her in the toilets at the Christmas Party (literally the last day I worked for that company, having had to tough it out while the divorce went through and I made plans to move away) the mistress was in the loos.

Turned out he had dumped her and had taken someone else (from the same company - he not only shit on his own doorstep, he had active diarrhoea on it!) and she came up to me and said: "Hey, I'm so sorry for everything that happened before" (Happened ?! You cheated with my husband while I was on a business trip - so that just 'happened' did it?) "He's here tonight with Laila - they're together now - we should just walk out there, arm in arm and show him!"

I mean she was a delusional fool wasn't she?

I just said: "It's a bit too late for sisterhood now. And everyone on that dance floor knows exactly what you did. If I walked in there, arm in arm with you, they would think I am as stupid as you. Don't worry, I don't hate you, I don't ever think of you. He is the problem. You're just an idiot. And I don't talk to idiots, so don't talk to me again."

Sounds a bit grand, I think I walked into the tampon dispenser as I flounced out.

TheBoldPombear · 19/04/2026 19:50

Arlanymor · 19/04/2026 19:28

Oh wow, sorry that this has landed at your feet in the way that it has. Not your fault at all and horrible feeling that you were used. I wouldn't ever speak to either of them again unless for something work-related (and even then I would find a way around it if I could). I can understand Pat being mortified, but you reap what you sow right? Yes absolutely, they've made their grubby little bed, they have to lie in it. It's so common in big companies that dominate an area though isn't it?

I remember when my ex-husband cheated and it was with someone we both worked with - all in different departments but the same company. And when I bumped into her in the toilets at the Christmas Party (literally the last day I worked for that company, having had to tough it out while the divorce went through and I made plans to move away) the mistress was in the loos.

Turned out he had dumped her and had taken someone else (from the same company - he not only shit on his own doorstep, he had active diarrhoea on it!) and she came up to me and said: "Hey, I'm so sorry for everything that happened before" (Happened ?! You cheated with my husband while I was on a business trip - so that just 'happened' did it?) "He's here tonight with Laila - they're together now - we should just walk out there, arm in arm and show him!"

I mean she was a delusional fool wasn't she?

I just said: "It's a bit too late for sisterhood now. And everyone on that dance floor knows exactly what you did. If I walked in there, arm in arm with you, they would think I am as stupid as you. Don't worry, I don't hate you, I don't ever think of you. He is the problem. You're just an idiot. And I don't talk to idiots, so don't talk to me again."

Sounds a bit grand, I think I walked into the tampon dispenser as I flounced out.

I’m sorry this happened to you x

OP posts:
Arlanymor · 19/04/2026 19:52

TheBoldPombear · 19/04/2026 19:50

I’m sorry this happened to you x

Ah thanks but well over it now, stung at the time! Looking back I'm just a bit gobsmacked at how people can brazen stuff out!

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