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AIBU?

Share your dilemmas and get honest opinions from other Mumsnetters.

AIBU to feel uncomfortable if my child invites their father's mistress?

562 replies

Zoobaloo · 02/08/2026 23:09

Looking for perspectives on the following:

Would you attend your adult DC’s wedding if they had invited their father’s mistress? Would it change if the affair was years ago? Would you feel disrespected?

OP posts:
Tiptopflipflop · 03/08/2026 02:55

If it were "just" that he had an affair with her and they are now married, I would be inclined to invite them both. We are all human and relationships can be messy, but ultimately she is his wife now.

However, I can't really see how you can invite a woman that bitches about your Mother and insults her. If nothing else, you're going to spend the whole wedding worried it will all kick off.

maxslice · 03/08/2026 02:47

Gooseling · 03/08/2026 02:45

She isn’t.

She is her father’s wife.

It does not make her a stepmother.

Technically, it does. And as I said to another poster, I was just being pedantic.

Gooseling · 03/08/2026 02:45

maxslice · 03/08/2026 02:09

She is a stepmother, whether OP chooses to recognize it or not. Even so, I think the father is unreasonable in expecting everyone to gloss over the damage he did to his family. OP might present something like this to persuade her DF to leave wifey at home. “I know you want her to come, Dad, and I understand why. But it will inevitably be awkward. You understand. Do you
really want Becky to be uncomfortable? Some people at the wedding will snub her. Others could say nasty things. If you really love her, you wouldn’t subject her to that.”

She isn’t.

She is her father’s wife.

It does not make her a stepmother.

LivingTheDreamish · 03/08/2026 02:35

Perfectly acceptable to refuse to have a relationship with DF's mistress/new wife and not invite her to your wedding. She's unpleasant to your mother who has every right to be deeply hurt by what happened, so therefore you have to pick sides, and I would pick DM too. DF has made his bed OP. He can come to the wedding alone or not at all. Hopefully he will start considering if he wants to meet future grandchildren etc....

maxslice · 03/08/2026 02:30

kkloo · 03/08/2026 02:25

Only by dictionary definition and many don't go by that.

I was just being pedantic.

AnonyMumAuDHD · 03/08/2026 02:29

Zoobaloo · 02/08/2026 23:31

I wouldn’t have invited her because although I’m civil with her, I just don’t like her

Then you stick to your guns - father’s second wife is not invited. She mada a travesty of your mother’s marriage and you won’t allow her to do the same to your wedding by being present. He comes alone or not at all.

If your father doesn’t respect your wishes, then he is being true to form, isn’t he? And your day would be all the better for his absence. He’s lucky to be invited at all. Many in your shoes would have stopped contact after the divorce. I know I would have.

kkloo · 03/08/2026 02:25

maxslice · 03/08/2026 02:09

She is a stepmother, whether OP chooses to recognize it or not. Even so, I think the father is unreasonable in expecting everyone to gloss over the damage he did to his family. OP might present something like this to persuade her DF to leave wifey at home. “I know you want her to come, Dad, and I understand why. But it will inevitably be awkward. You understand. Do you
really want Becky to be uncomfortable? Some people at the wedding will snub her. Others could say nasty things. If you really love her, you wouldn’t subject her to that.”

Only by dictionary definition and many don't go by that.

Vaxtable · 03/08/2026 02:10

I would explain to your father why youdont want her there. You need to be honest about your dislike for her

then he has a choice, attend without her or don’t attend

maxslice · 03/08/2026 02:09

Gooseling · 03/08/2026 00:52

She is not a “stepmother”. The OP does not refer to her as “stepmother”. She doesn’t want her at her wedding.

She is a stepmother, whether OP chooses to recognize it or not. Even so, I think the father is unreasonable in expecting everyone to gloss over the damage he did to his family. OP might present something like this to persuade her DF to leave wifey at home. “I know you want her to come, Dad, and I understand why. But it will inevitably be awkward. You understand. Do you
really want Becky to be uncomfortable? Some people at the wedding will snub her. Others could say nasty things. If you really love her, you wouldn’t subject her to that.”

Wadsworthy · 03/08/2026 02:07

I ewouldn't want this woman at my wedding @Zoobaloo And if my father refused to attend my wedding, I'd feed that back to him - that he is valuing a woman who made my childhood & family life ery difficult over his own daughter.

Perhaps if you say that calmly and unemotionally to him - (use AI!!!! Grin ) he might see sense.

But they both sound horrible.

Sensiblesal · 03/08/2026 01:56

Zoobaloo · 02/08/2026 23:36

Because he’s told me he won’t come without her and that he hopes his invite will be hers too as she’s ‘family’ now.

He has a point!

how long ago did all this happen?

unless it was in the last year or two & so still freSh then I think its time to draw a line and move on from things.

Yes, your dad’s behaviour was shitty & he hurt your mum but holding onto that forever and having all this angst/drama/hurt is so silly.

life is really short, I’m sorry but I would invite her same as I would invite your mums partner/husband & I would expect them to behave themselves on my special day.

Shinckle · 03/08/2026 01:49

Say to your dad look, the most important people to me to have there are you and mum. But you know it would be incredibly difficult for mum if Sally is there, so you are asking me to choose Sally over my own mum. It's just not fair. I love you, I really really want you there to give me away (or whatever), but I cannot choose Sally over Mum so I am asking you to please come without her.

It is a tricky one, it's arguably a bit paternalistic (maternalistic?) to decide over your mum's head that she should not have to deal with it. Maybe having this women there would not actually ruin the day for her because there is so much joy to be had from being at her daughter's wedding. Maybe she can handle it and doesn't need you to "fix" if for her and risk falling out with your dad. But it is really hard to judge and I feel for you having to navigate through all the hurt and manipulation.

givemesteel · 03/08/2026 01:45

blythet · 03/08/2026 00:08

My exH is now living with his affair partner (they began an affair when I was pregnant and it went on through the first year of my DDs life - so a really vulnerable time for me). I also knew the affair partner prior to affair so she knew I existed and that was pregnant/had a new baby etc.

They now play happy families with my Dd (now a teen) 2 nights per week. Obviously I don’t love the situation but would never bad mouth either of them and my Dd is still oblivious to all the background.

if they’re together by the time my Dd gets married, I will basically be in the same scenario as your mum in this situation.

would I choose to spend time in the company of either my exH or his affair partner? NO WAY

would I be willing to be civil for one day for my dds sake and bite my tongue? ABSOLUTELY, it’s her day. She deserves to be happy and would want both me and her dad there.

my DDs wedding is not about me - or her dad - or any historic drama. It’s about her and her new husband and their future. In fact I’d put on a brave face and not even let on to my Dd that o had an issue with it. It’s not fair to put that on her.

if she happens to grow up and see through them both and decide herself she doesn’t want her dads partner there I won’t pretend I’d be gutted 😂 but that will never come from me or my influence

I am in the same position as you. There's a lot of years until this scenario would play out for me. But if my child wanted her there I would accept that for their sake.

But in the OPs case she doesn't want the new woman there so shouldn't invite. I imagine her dad will end up going even if she's not invited. But if he doesn't that's on him.

Bogofftosomewherehot · 03/08/2026 01:42

AgnesMcDoo · 02/08/2026 23:34

She’s his wife now. She should be invited.

Absolute tosh!

thereisnomeaning · 03/08/2026 01:38

Zoobaloo · 02/08/2026 23:34

I don’t want a relationship with her at all, or for any future children to. I’m civil with my dad because he’s my dad but I don’t like his wife. Affair aside, she isn’t a very nice person and is very nasty towards my mum, calling her names like a teenager in high school

Well, if she behaves like this towards your mother, I think it would be easy for me. I wouldn't invite her and would accept it if my father then decided not to come.

thereisnomeaning · 03/08/2026 01:36

In the mother's place, I would suck it up and deal with it for the sake of my child. I do think being sat in a different place in the reception is a reasonable ask though.

It's really up to you to decide what you are comfortable with. You have every right to invite your father but not his wife. Of course, he may then decide not to come, which you'd have to accept.

I don't think there is a right or wrong and I'm not sure you can avoid upsetting someone. Decide what you think is right and then let everyone else decide how they want to handle it.

I think if your father would be wrong not to attend if invited without his wife, but that's up to him.

RestingRoundFace · 03/08/2026 01:21

Your dad said he won't come if he can't bring his nasty wife
It sounds manipulative
You should tell him he can't come if he brings her.
He's putting her first again by giving you this dilemma.
Give the dilemma to him by sticking to your guns. He can ponder over it, not you

kkloo · 03/08/2026 01:20

Zoobaloo · 02/08/2026 23:34

I don’t want a relationship with her at all, or for any future children to. I’m civil with my dad because he’s my dad but I don’t like his wife. Affair aside, she isn’t a very nice person and is very nasty towards my mum, calling her names like a teenager in high school

No way would I invite her then.

Flot · 03/08/2026 01:10

Zoobaloo · 02/08/2026 23:34

I don’t want a relationship with her at all, or for any future children to. I’m civil with my dad because he’s my dad but I don’t like his wife. Affair aside, she isn’t a very nice person and is very nasty towards my mum, calling her names like a teenager in high school

It sounds clear cut. Your mum should be the absolute guest of honour. She should not have to endure the presence of the OW.

I think you should just invite your dad. If he doesn’t want it come without his fellow homewrecker, then it’s fine for him not to come.

My dad and his mistress are married now. Even though my mum is now dead, I am NC with them. They are a horrible pair of narcs. It’s been nearly a decade of NC and I have zero regrets.

OtterlyAstounding · 03/08/2026 01:00

Fortnightly · 03/08/2026 00:49

What he did to OPs mother is separate to the relationship he has with his daughter. It always will be. OP needs to move forward and not have to carry the burden of this.

So why is your belief that OP's mum has to suck it up and suffer, instead of her father? Surely an appropriate compromise would be that her father doesn't expect his affair partner to attend family events, and in return, her mother is civil and polite to her father and doesn't cause a fuss.

Anyway, it's only separate if OP feels it's separate – her father's hurtful, unethical behaviour also impacted on her and the structure of her family, and however she feels about that is valid. So if she feels that her father's behaviour has diminished him in her eyes, that's entirely valid, as is wanting to prioritise her mother's happiness over her father's happiness.

She doesn't 'need' to move forward from a dislike of her father's behaviour, or his new wife – her father needs to prioritise his daughter over his dick, and accept that he's being unreasonable to expect his children to accept his affair partner. Simple.

LilOleMe2 · 03/08/2026 00:59

It is highly irregular, and very pointed to invite someone, let alone someone close, to a wedding without their spouse. I think your mum needs to suck it up for one day.

Gateappreciation · 03/08/2026 00:55

Depends how long your dad has been married to his wife. If they’ve been married a long time, then I can see why your dad would want his wife there, as as a guest, rather than main wedding party.

Lilypad789 · 03/08/2026 00:53

Oh I think it would be awful to invite her. I’m so sorry because that doesn’t help you at all but your Mum gave birth to you. Assuming she’s been a good Mum then she may have dreamed of this day for decades. He hurt her, they hurt her and broke what she thought was her life. How awful for you and your Mum. Your Dad should understand why this is a hard no IMO. I would rather have my Mum happy with my Dad absent but only you can decide really.

Gooseling · 03/08/2026 00:52

blythet · 03/08/2026 00:19

All OP said was that the affair was years ago. She’s not said what age she was when it all happened or
if her stepmum was in her life when she was younger.

no my Dd doesn’t know any of the background but is now starting to see her dads gf’s behaviour (eg very controlling and selfish) but it’s never come from me.

I have not intentions of telling her any of this as I want her to have a good relationship with her dad for her own sake. However I can’t guarantee she won’t fallout. Exh has a massive family and many of them have fallen out with exH and his gf over the years - they are now estranged but have regular contact with my Dd. I’ve allowed contact on the agreement my Dd will be left out of family politics and bad mouthing of her dad. Unfortunately that will be harder for me to influence when she’s an adult

She is not a “stepmother”. The OP does not refer to her as “stepmother”. She doesn’t want her at her wedding.

whatwouldlilacerullodo · 03/08/2026 00:52

Zoobaloo · 02/08/2026 23:19

  1. The title is AI generated through Mumsnet and I forgot to change it. This is about my mum and dad. Sorry for the confusion!
  2. Dad had an affair multiple times with the same woman and is now married to her. It caused an ugly divorce and lots of heartache for my mum.
  3. Dad wants his new wife at my wedding. I don’t agree but he won’t come without her. I don’t think it’s fair to mum.

I wanted some opinions to decide how to navigate this going forwards

It seems very easy. Dad is invited if he comes alone. End of. Mum is invited.