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Relationships

Mumsnet has not checked the qualifications of anyone posting here. If you need help urgently or expert advice, please see our domestic violence webguide and/or relationships webguide. Many Mumsnetters experiencing domestic abuse have found this thread helpful: Listen up, everybody

Me and my partner and his ex affair partner.

65 replies

Suneptune · 06/09/2025 00:23

I have been with my partner for 9 months. I was married for 25 years and separated and then divorced 5 years ago when my ex informed me out of the blue (to my utter horror and complete shock) that he had slept with multiple women including at least one of his exes (who I considered a friend of mine) and with several women I knew. The divorce was brutal (him not me). I moved away and have not seen him since the separation 5 years ago. I had to make a new life. I did not know who to trust. Life as I knew it had ended. It was tough and lonely. I had a lot of therapy. I didn’t date.

i have always valued fidelity and honesty and my ex knew this. It was one of the reasons he married me he said. I have always said that I could never be with someone who cheated and even my friends I have realised are all faithful types. I suppose like attracts like. Famous last words.

My new partner on our first date told me that he had cheated on his wife 10 years ago and that they had recently divorced (married for 20). He said he was ashamed of his behaviour and regretted what he had done. So I decided to give us a chance. He was loving sweet tender to me.

I then found out that this affair lasted a year and that his affair partner had herself had several affairs during her marriage. The first man involved with her was absolutely “cut up” apparently by their affair ending and he was the second. She has been with her new partner for several years now. His wife found out a year after the affair and he chose to stay with her and their children.

Then he told me over the next few months firstly that he had cheated on his first wife who he was with for 10 years with a random woman who threw herself at him. He also had a fling with someone he met in a pub during his second marriage.

Lastly, I now know that he is still in contact with the affair partner who works for the same organisation as him though in a different office. I thought at first that they saw each other only every so often at the odd social event but it now transpires that last year, they both signed up for a voluntary project (with about a dozen others) and saw each other several times through this. Some weeks after the project was over the two of them then went to a blues club that they had gone to during their affair (her suggestion).

He then started to date me.

Then this summer they both signed up for another voluntary project. I was upset. He told me that she had moved on with her life when I asked what was going on. He said that he had the utmost respect for her in her professional life. He said I was the most important woman to him. He said he needed me to trust him. They saw each other (together with the rest of the team) two or three times a week for this project and there was a lot of socialising in pubs also. On the final very intense day of the project (there was a party afterwards), he didn’t text me at all and not even to say goodnight.

For the last few weeks I feel as if I have been on a choppy sea. He knows this and has said that it was a difficult time for me. He also said that just because I don’t see my ex and the people who betrayed me in my previous life, doesn’t mean that he can’t see her. I said to him that I do not mind him seeing his wives of course not. It was just that I was concerned about the affair partner and that I felt that she was a third party in our relationship. It seems to me (though I didn’t say this to him) that this woman was exactly the sort who my ex husband would have slept with. I don’t want her in my life. My partner told me some ugly details of how they conducted their affair which made me want to cry.

I wonder if he is less loving to me since the ending of the project (doesn’t use my nickname) and the tone of his texts seem to have changed though I could be reading too much into this. He says I am judging him and that he has changed. Do cheats change? Perhaps for him she’s the one who got away? What about the project next year? There’s other stuff but I have gone on enough.

OP posts:
WilfredsPies · 06/09/2025 01:19

Fuck this one off. At only 9 months in, you should still be in the honeymoon stage, falling in love and making plans. Not wondering if he’s going to cheat on you and whether he’s intentionally punishing you by withdrawing his affection over messages. Fuck that for a game of soldiers! You’re a strong, confident woman. Why are you wasting your time with this loser? And, out of curiosity, which bit of cheating made him feel regretful? Was it his colleague? The random woman? Or the pub fling? And he wasn’t so ashamed of his behaviour that he wasn’t able to confess it to you. He’s proud of himself. He might deny it, but he’s lying.

He also said that just because I don’t see my ex and the people who betrayed me in my previous life, doesn’t mean that he can’t see her. He’s absolutely right. He’s free to see whoever he likes, whenever he likes, for however long he likes, and you’ve got no right to try and stop him. What you do have a right to do, however, is decide what behaviour you are and are not willing to tolerate from a romantic partner.

I wonder if he is less loving to me since the ending of the project (doesn’t use my nickname) and the tone of his texts seem to have changed though I could be reading too much into this I think that if you’ve picked up on a change of tone, then you aren’t imagining it. So this is either on its way out, or he’s punishing you. Do you want to wait and see? Or take control of your own life?

He says I am judging him and that he has changed. Do cheats change? I expect some of them do, when they’ve had enough of double lives and have met someone they don’t want to cheat on. And some will cheat in every relationship they have. It’s part of who they are. Tell him yes, you have judged him, and he has shown you that he is not the sort of person you want to be in a loving and committed relationship with.

He will, of course, claim that you are crazy and that you have issues and are tarring all men with the same brush and taking out your anger on your husband on him and his perfectly innocent friendship with the woman he betrayed his wife with. And that’s fine because he is a cliche, and that’s all you can expect from a cliche. And when he does say it, tell him that the only thing you are carrying with you after the breakdown of your marriage is an ability to see when men are just not quite good enough for you to give up your freedom for, so now he is free to be as friendly as he likes with whomever he likes.

MrsTerryPratchett · 06/09/2025 01:26

Do cheats change? Possibly someone who cheated once, ended it, learned lessons, didn’t do it again, owned their stuff.

Some who repeatedly cheated through two marriages? Cop on to yourself. He’s a proper wanker.

Willquery123 · 06/09/2025 01:29

You're not right for each other but you are also wildly overthinking things.

You'll drive yourself insane analysing every thing he does / says / inflection / tone.

Buzzy1234 · 06/09/2025 01:47

Don’t date cheaters. And don’t assume because they’re honest about it they’re remorseful.

cloudtreecarpet · 06/09/2025 07:38

You were cheated on before.

Why take the risk of being hurt like that again with a man who has cheated multiple times?

Raise your standards and end this relationship otherwise you are going to go through heartbreak - reading your post it seems inevitable.

SugarPlumpFairyCakes · 06/09/2025 07:42

I really don’t think cheats change.

I think it’s a mindset as in they don’t see why they can have and do exactly as they want. They don’t see the problem with it and the fidelity values of other people (their partners) don’t concern them. It isn’t their problem.

I would part ways with this one. It doesn’t sound like your values are aligned.

Zanatdy · 06/09/2025 07:44

You’re going to get hurt. I’d ending this.

Velvian · 06/09/2025 07:44

I would be wary of anyone that mentions 'fidelity' so much in the dating stage. Particularly banging on about how much they value fidelity (in you).

Conversations about being exclusive and monogamy are fine, but all this talk of cheating seems a bit of red flag.

Mumptynumpty · 06/09/2025 07:47

I think cheaters don't think of themselves as cheaters. There are always "reasons" usually involving it being the partners fault. Indeed he may be setting you up to be the "reason" he has to cheat because you don't trust him.

I don't think you trust yourself. Your perception seems accurate to me.

Trust yourself.

CharityShopMensGlasses · 06/09/2025 07:47

Bin him xx there are men out there who have the same values as you and will help you feel safe and secure in your relationship.

GreenAndWhiteStripes · 06/09/2025 07:47

MrsTerryPratchett · 06/09/2025 01:26

Do cheats change? Possibly someone who cheated once, ended it, learned lessons, didn’t do it again, owned their stuff.

Some who repeatedly cheated through two marriages? Cop on to yourself. He’s a proper wanker.

This.

TwistedWonder · 06/09/2025 07:49

Honestly this man waved a huge red flag in your face right from the start but you choose to ignore it. Then along the way he’s gradually rolled out more and more flags to the point it resembles a communist party rally.

He's a serial cheat who minimises and justifies his behaviour. Why would you carry on wasting your time either a man whose values don’t align with yours?

SchnizelVonKrumm · 06/09/2025 07:57

So he's been married and divorced twice and cheated on both wives? Chuck this one back OP, he has already told you who he is - as they say on MN, believe him.

OchreRaven · 06/09/2025 08:07

If he had changed he would understand your concerns and how it is impacting his relationship with the ‘most the important woman in his life’. He would be avoiding voluntary projects that involve her because he knows that their relationship was wrong and doesn’t want his past mistakes to affect his future.

I also don’t really understand why he thinks you need to unconditionally trust him after 9 months of dating when he has informed you he is a serial cheat. You don’t need to do anything. Trust is built on trust worthy behaviour. Has he shown you much of this?

He almost seems proud of his extra marital affairs. While he expect to be praised for his honesty I think his motives are more sinister. He knows because your past this information would flare up your insecurities and he has gone into great detail about his affairs and rather than prove he has changed (as his behaviour was the problem) he says it’s a YOU issue when you are uncomfortable with his ongoing relationship with his AP. Major red flag in my book. This whole man is a red flag. My take is he wants you insecure. He is the type to get off on cheating and getting away with it. It makes his life exciting.

If you stay in this relationship you will end up miserable. Don’t do it to yourself. You don’t need to justify why you are ending it. Just say you don’t think you are compatible.

ChristmasFluff · 06/09/2025 08:11

If he was genuinely ashamed of his actions, he would not want to be around the person who would be a huge reminder of his shame - his affair partner.

Talk is cheap. He's not made any attempt to reassure you, and has instead tried to make you seem paranoid and suspicious - exactly what cheaters do.

I'd assume that he his lack of contact during the social event and the way he's been since is because the affair has restarted. But it really doesn't matter whether it has or not. You have a wealth of evidence of his true nature already.

Penelopepetunia · 06/09/2025 08:12

Buzzy1234 · 06/09/2025 01:47

Don’t date cheaters. And don’t assume because they’re honest about it they’re remorseful.

This. If my current husband had alluded to cheating or anything with any previous partner he is not being honest he is also saying I did this and I’m such an amazing person but you know I am not or was not faithful and you know the risk - you are signing up to that risk - when I do it I do it repeatedly.

Throw him back and just cut it off. This was is not a good man.

Lighteningstrikes · 06/09/2025 08:13

I wouldn’t trust this one as far as I could throw him.

Your instincts are there for good reason.

stayathomer · 06/09/2025 08:19

Op I’m so so sorry you went through what you went through. I think you should go back to being by yourself and not having to worry about this stuff- there is way too many possibilities and suppositions here, it all sounds so convoluted and I personally don’t believe anyone can be that sorry they hurt someone if it carried on for any length of time. I am so sorry, you don’t deserve this crap

jimbort · 06/09/2025 08:20

“For the last few weeks I feel as if I have been on a choppy sea. He knows this and has said it was a difficult time for me “

he knows he’s causing you pain and is carrying on regardless. Would you do the same if the situation was reversed?! I vote get rid as well. Your instincts are there to protect you and you clearly can hear them even if you have come here to talk it through. You’ve been very clear on your values and for what it’s worth I wish everyone had values like yours as dating would be better if there was no tolerance of cheating. I wish you well, hope the sea becomes tranquil and safe

LongStoryLong · 06/09/2025 08:22

WilfredsPies · 06/09/2025 01:19

Fuck this one off. At only 9 months in, you should still be in the honeymoon stage, falling in love and making plans. Not wondering if he’s going to cheat on you and whether he’s intentionally punishing you by withdrawing his affection over messages. Fuck that for a game of soldiers! You’re a strong, confident woman. Why are you wasting your time with this loser? And, out of curiosity, which bit of cheating made him feel regretful? Was it his colleague? The random woman? Or the pub fling? And he wasn’t so ashamed of his behaviour that he wasn’t able to confess it to you. He’s proud of himself. He might deny it, but he’s lying.

He also said that just because I don’t see my ex and the people who betrayed me in my previous life, doesn’t mean that he can’t see her. He’s absolutely right. He’s free to see whoever he likes, whenever he likes, for however long he likes, and you’ve got no right to try and stop him. What you do have a right to do, however, is decide what behaviour you are and are not willing to tolerate from a romantic partner.

I wonder if he is less loving to me since the ending of the project (doesn’t use my nickname) and the tone of his texts seem to have changed though I could be reading too much into this I think that if you’ve picked up on a change of tone, then you aren’t imagining it. So this is either on its way out, or he’s punishing you. Do you want to wait and see? Or take control of your own life?

He says I am judging him and that he has changed. Do cheats change? I expect some of them do, when they’ve had enough of double lives and have met someone they don’t want to cheat on. And some will cheat in every relationship they have. It’s part of who they are. Tell him yes, you have judged him, and he has shown you that he is not the sort of person you want to be in a loving and committed relationship with.

He will, of course, claim that you are crazy and that you have issues and are tarring all men with the same brush and taking out your anger on your husband on him and his perfectly innocent friendship with the woman he betrayed his wife with. And that’s fine because he is a cliche, and that’s all you can expect from a cliche. And when he does say it, tell him that the only thing you are carrying with you after the breakdown of your marriage is an ability to see when men are just not quite good enough for you to give up your freedom for, so now he is free to be as friendly as he likes with whomever he likes.

This is it, in a nutshell, OP. You’re too good for this guy. Please don’t let him bring you down.

Nodlikeyouwerelistening · 06/09/2025 08:22

Agree. Get rid. You’ve done so well since splitting with your exH. You’ve made time for yourself, prioritised yourself and started to build a life. And just like that in less than a year, this guy has done undone so much of your growing self-esteem.
It’s been 9 months. Not long at all so you’ll definitely get over him if you go no contact. Don’t waste any more time on people not worth the effort (he is a walking affair waiting to happen, and you know this). Don’t blame those alarm bells going off in your head on your previous experience and your resulting insecurities. Your experience is informing the alarm bells for a reason. Trust them.

If you stay together, why are you choosing to stay? Do you think this level of misery, insecurity, mistrust is ever okay? Ask yourself if maybe you are putting yourself in a situation similar to with your exH hoping for a different result.

SL2924 · 06/09/2025 08:22

Get rid of this guy, OP. He has disaster written all over him. This isn’t someone who cheated once and learnt his lesson- he is a serial cheat. He is comfortable lying and your life will be hell. If this is already swirling around so early in the relationship I don’t this bodes well.

tellmesomethingtrue · 06/09/2025 08:26

When someone shows you who they are, believe them.

cloudtreecarpet · 06/09/2025 08:26

I don't think cheats are necessarily always cheats but personally I couldn't be with someone who has it in them to lie & compartmentalise their life in such a cold & calculating way.
Just knowing the person I was with was capable of that would be enough for me to end it.

Morningswim · 06/09/2025 08:26

He's testing the water to see how much you will put up with /turn a blind eye to

He's a chronic cheat.

You deserve better.

Better to be single than in a relationship with a man who is going to shag around like he's still single