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AIBU?

Share your dilemmas and get honest opinions from other Mumsnetters.

AIBU to think this is an inappropriate relationship?

657 replies

Playnoway · 09/02/2026 17:10

Help please, I think this is a completely inappropriate relationship but my ex doesn’t seem to think there is an issue.

My DS is currently 9 years and I am a single mum. He lives with me Sunday night to Thursday after school and stays with dad Thursday till Sunday. Me and his dad broke up when he was only 6 months old and my husband moved in with his new partner 6 years ago and married her 3 years ago. They had a baby of their own 4 years ago.

His stepmum is lovely and I have no issues with her as a stepmum but as he gets older I’m finding their relationship even worse.

AIBU to think everything on this list is completely inappropriate for a stepmum? Should I speak to her or consider changing the arrangement for custody?

  1. My DS has called her his best friend since he was 3 and he still does it now. He has loads of friends at school but still says this about her.
  2. When she was pregnant she wouldn’t let anyone visit her daughter until my son had visited.
  3. He goes to drama club every Thursday and he will only let her take him. He says it’s their special thing, it’s so weird for them to have a special thing she’s not his parent.
  4. He will sit and cuddle her.
  5. He says he loves her and she loves him. So weird in my opinion.
  6. He says she’s his family, she isn’t she just married his dad.
  7. She has always read him a book before bed. He says she’s the best reader. Why doesn’t his dad do this, why is this woman putting my son to bed?
  8. He calls her parents nana and grandad and spends a lot of time with him. They take him places like play area and indoor play. They’re not his grandparents. Why is dad allowing this?

Please tell me I’m not unreasonable. This woman has a completely inappropriate relationship with my son and I want it to stop.

OP posts:
brunettemic · 10/02/2026 07:04

Playnoway · 09/02/2026 18:41

I feel people are not understanding what I’m saying. This woman is trying to be his mum. She can be polite and not be nasty but she shouldn’t be spending time alone with him. I don’t let his dad have him for dad to not even be around. It’s ridiculous, for example one Saturday a month she and my son have a day just the 2 of them. When I asked my husband to explain why he isn’t with him he responded by saying he spends one Saturday a month with daughter alone so build a daddy daughter bond. Where’s the father son time and father son bond?

You don’t like her and you don’t like that your son does. That’s not the same thing as these concerns you’re painting.
From what I’m reading you would rather your son went to his dads house and this woman ignored him, made him feel alone, not part of the family group and treated him like an inconvenience.

Howwilliknow122 · 10/02/2026 07:15

Op the step mums daughter is only 4 so how long exactly has she been going to school to collect her daughter thats shes managed to befriend everyone but you dont know anyone as well?? Just thinking of the age gap of the two kids why are the other parents even be stood in the same area as a mum waiting for a 4 year old??

firstofallimadelight · 10/02/2026 07:20

I would find the best friend thing irritating, that’s obviously something she’s taught him to say.
The meeting dd first is a lovely gesture.
Drama club again weird his dad should be doing those bits.
cuddling/ saying I love you- fine
They are a family
dad should do bedtime
her parents including him - lovely.

it sounds like his dad is a bit crap and she’s stepped upto ensure your ds feels included and a part of the family which is wonderful. But I agree she is crossing the line at times
But it’s also odd you prioritise holidays with friends over family holidays. Can you two not go away at a different time to the month you ex has him? (I would never have allowed a month long holiday though) so it’s not reducing their holiday it’s extra.
It reads like out of the three of you she is putting the most effort into her relationship with your ds. Maybe you need to spend some more time with him, create shared interests, invite friends round and get to know the other parents.

At the end of the day you’re his mum she isn’t that can’t be taking away for you. But you can reflect on your relationship and work to improve it.
Theres not a lot you can do about what happens at his dads he’s safe and happy, how they do things is up to them.

Howwilliknow122 · 10/02/2026 07:37

supersonicginandtonic · 09/02/2026 18:37

I have a 17 year old step daughter been in her life for 12 years.
I didn’t let anybody meet my younger ones until their older siblings have met them.
I have an activity I do with her once a week as it’s our special activity.
she calls my parents nanna and grandad. They take her on holiday with the rest of her siblings and treat her no differently.
i cuddle her, always have and always will.
She is my family.
I read her books at bedtime when she was younger. What on earth is wrong with that? Surely you want your child to feel comfortable with somebody who is caring for them almost half the time. Who is interested in what they do and care for them?
I really cannot understand your issue at all.

I didn’t let anybody meet my younger ones until their older siblings have met them.

your whole post was lovely but the above i just thought was the sweetest thing! ❤️

Katemax82 · 10/02/2026 07:39

Christ on a bike she sounds great! I used to put my stepson to bed and read to him. Unfortunately my 2 stepsons (one came to live with us first) weren't easy kids and weren't that fond of me. Your lucky your son has a nice relationship with her, she could be described as a wicked stepmother like I was

Imdunfer · 10/02/2026 07:45

I haven't read everything and don't know if this has already been said, so apologise if it has.

Unless the OP takes steps to mend her relationship with her son, seeing him on non school days, going on holidays that he likes, stopping dissing his stepmother, there has to be a real risk that the boy is going to ask to live full time with his father and step mother, doesn't there?

I wonder if the OP has realised this.

SexyFrenchDepression · 10/02/2026 07:49

Playnoway · 09/02/2026 18:41

I feel people are not understanding what I’m saying. This woman is trying to be his mum. She can be polite and not be nasty but she shouldn’t be spending time alone with him. I don’t let his dad have him for dad to not even be around. It’s ridiculous, for example one Saturday a month she and my son have a day just the 2 of them. When I asked my husband to explain why he isn’t with him he responded by saying he spends one Saturday a month with daughter alone so build a daddy daughter bond. Where’s the father son time and father son bond?

I dont think anyone is misunderstanding. You just dont like her and are jealous. There is nothing wrong with any of it. MN is full of threads from mums whos DC are excluded by step GPs and that SMs are saying they dont want SDC around etc snd you're complaining he is being treated as family. She is clearly not trying to be his mum, there is nothing in anything you have said to suggest this. His dad not bonding with him is a totally non related problem, it shouldn't be either/or.

GalaxyJam · 10/02/2026 07:53

Imdunfer · 10/02/2026 07:45

I haven't read everything and don't know if this has already been said, so apologise if it has.

Unless the OP takes steps to mend her relationship with her son, seeing him on non school days, going on holidays that he likes, stopping dissing his stepmother, there has to be a real risk that the boy is going to ask to live full time with his father and step mother, doesn't there?

I wonder if the OP has realised this.

I know a family who had a very similar dynamic to this actually (my neighbours). The son lived with his mum in the week and spent every weekend and most of the holidays with his dad, wife and half siblings. When he was 13 he asked to live with his dad full time and at that point he was deemed old enough to have his wishes taken into account. This was around 3 years ago and he’s still with his dad. His mum goes on a lot of nice holidays!

Sostewedover · 10/02/2026 07:56

This is such a reverse.

Imdunfer · 10/02/2026 08:01

Playnoway · 09/02/2026 18:41

I feel people are not understanding what I’m saying. This woman is trying to be his mum. She can be polite and not be nasty but she shouldn’t be spending time alone with him. I don’t let his dad have him for dad to not even be around. It’s ridiculous, for example one Saturday a month she and my son have a day just the 2 of them. When I asked my husband to explain why he isn’t with him he responded by saying he spends one Saturday a month with daughter alone so build a daddy daughter bond. Where’s the father son time and father son bond?

But you didn't "let his Dad have him".

You gave him to his Dad because you wanted to be free to enjoy yourself at weekends and on your holidays. You were glad to be free of him, please don't try and present this as some sort of selfless gesture back when he was 3.

You want your son to live for the majority of his non school waking hours in a house with someone who doesn't love him and is just polite to him. Who treats him competent differently from his sister.

That does not sound like being a loving mother to me.

BustyLaRoux · 10/02/2026 08:04

Playnoway · 09/02/2026 18:49

I’m not sure what a reverse is. I’ll be honest I thought people on a mums group would be more understanding of my pain. Probably made it sound worse in my head than it is but I still wish if he was going to have a best friend it would be me.

You really are making all of this about YOU!

You talk about YOUR pain - rather than what your DS is getting from the close bond he has with his DSM

You opted to send him to his dad’s EVERY WEEKEND, because YOU like to go out at weekends - and now your DS is reaping the benefit of spending lots of quality time with his dad and family, YOU don’t like it all of a sudden

You’ve never taken him on holiday because YOU like going away with friends and you find him hard work, plus YOU don’t like the type of holidays he wants to go on

You’re jealous. All the things you list are not inappropriate. It’s just that YOU don’t like it. Sounds like your ex has a great partner and she has put in a lot of effort with your DS. How wonderful of her. You should be happy for your DS and recognise that had you put in more effort yourself, you would also be reaping the benefit now. But you chose weekends and holidays with your friends.

By the way, Hell would freeze over before I would consent to not seeing my DC for four weeks!

Brightsky210 · 10/02/2026 08:12

ShawnaMacallister · 10/02/2026 03:34

Cuddling your step children and telling them you love them is not over stepping. Goodness me.

No I didn’t mean that aspect was although I don’t agree with it.

I just didn’t do it because I didn’t need to and when I got involved the child was 7.

i don’t think as a step mother you need to be doing that to a 9 year old cuddling them no a quick hug maybe . Most 9 year olds I know won’t want a cuddle.

GalaxyJam · 10/02/2026 08:18

Brightsky210 · 10/02/2026 08:12

No I didn’t mean that aspect was although I don’t agree with it.

I just didn’t do it because I didn’t need to and when I got involved the child was 7.

i don’t think as a step mother you need to be doing that to a 9 year old cuddling them no a quick hug maybe . Most 9 year olds I know won’t want a cuddle.

I have a 10 year old and she most definitely still wants cuddles, as do my friends’ children of the same and similar ages. My 12 year old still wants cuddles too.

ShawnaMacallister · 10/02/2026 08:20

firstofallimadelight · 10/02/2026 07:20

I would find the best friend thing irritating, that’s obviously something she’s taught him to say.
The meeting dd first is a lovely gesture.
Drama club again weird his dad should be doing those bits.
cuddling/ saying I love you- fine
They are a family
dad should do bedtime
her parents including him - lovely.

it sounds like his dad is a bit crap and she’s stepped upto ensure your ds feels included and a part of the family which is wonderful. But I agree she is crossing the line at times
But it’s also odd you prioritise holidays with friends over family holidays. Can you two not go away at a different time to the month you ex has him? (I would never have allowed a month long holiday though) so it’s not reducing their holiday it’s extra.
It reads like out of the three of you she is putting the most effort into her relationship with your ds. Maybe you need to spend some more time with him, create shared interests, invite friends round and get to know the other parents.

At the end of the day you’re his mum she isn’t that can’t be taking away for you. But you can reflect on your relationship and work to improve it.
Theres not a lot you can do about what happens at his dads he’s safe and happy, how they do things is up to them.

Where does it make the dad sound a bit crap? I don't see it?

Imdunfer · 10/02/2026 08:22

Brightsky210 · 10/02/2026 08:12

No I didn’t mean that aspect was although I don’t agree with it.

I just didn’t do it because I didn’t need to and when I got involved the child was 7.

i don’t think as a step mother you need to be doing that to a 9 year old cuddling them no a quick hug maybe . Most 9 year olds I know won’t want a cuddle.

He was 3 when she gave him his first cuddle, it would be odd to stop.

ShawnaMacallister · 10/02/2026 08:26

Brightsky210 · 10/02/2026 08:12

No I didn’t mean that aspect was although I don’t agree with it.

I just didn’t do it because I didn’t need to and when I got involved the child was 7.

i don’t think as a step mother you need to be doing that to a 9 year old cuddling them no a quick hug maybe . Most 9 year olds I know won’t want a cuddle.

Total rubbish. My DSD is 9 and is very cuddly and tells me she loves me and I say it back. She loves a snuggle with her dad. I don't snuggle because that is crossing a line for me but hugs and cuddles? Perfectly normal for 9 year olds.

ImGonnaKeepOnDancing · 10/02/2026 08:31

Playnoway · 09/02/2026 17:10

Help please, I think this is a completely inappropriate relationship but my ex doesn’t seem to think there is an issue.

My DS is currently 9 years and I am a single mum. He lives with me Sunday night to Thursday after school and stays with dad Thursday till Sunday. Me and his dad broke up when he was only 6 months old and my husband moved in with his new partner 6 years ago and married her 3 years ago. They had a baby of their own 4 years ago.

His stepmum is lovely and I have no issues with her as a stepmum but as he gets older I’m finding their relationship even worse.

AIBU to think everything on this list is completely inappropriate for a stepmum? Should I speak to her or consider changing the arrangement for custody?

  1. My DS has called her his best friend since he was 3 and he still does it now. He has loads of friends at school but still says this about her.
  2. When she was pregnant she wouldn’t let anyone visit her daughter until my son had visited.
  3. He goes to drama club every Thursday and he will only let her take him. He says it’s their special thing, it’s so weird for them to have a special thing she’s not his parent.
  4. He will sit and cuddle her.
  5. He says he loves her and she loves him. So weird in my opinion.
  6. He says she’s his family, she isn’t she just married his dad.
  7. She has always read him a book before bed. He says she’s the best reader. Why doesn’t his dad do this, why is this woman putting my son to bed?
  8. He calls her parents nana and grandad and spends a lot of time with him. They take him places like play area and indoor play. They’re not his grandparents. Why is dad allowing this?

Please tell me I’m not unreasonable. This woman has a completely inappropriate relationship with my son and I want it to stop.

I can completely understand why you don’t feel comfortable with it but let’s face it, she’s not being inappropriate.

She’s loving him like her own and making him feel loved and included. Shes married to his dad and won’t want him to feel pushed out, especially as they have another child.

Thats not inappropriate - it’s a blended family.

I'm sorry OP but you’re being unreasonable. If it were reversed and it was your new husband then I’m sure you wouldn’t see any issue with it, so you can’t really do anything about it. You just don’t like it and feel like you’re not his favourite. I don’t mean to upset you by being blunt but you really need to take an internal look at your motives here. It’s not her that’s the issue- it’s you.

firstofallimadelight · 10/02/2026 08:32

ShawnaMacallister · 10/02/2026 08:20

Where does it make the dad sound a bit crap? I don't see it?

The fact that the step mum does bedtime and after school clubs. Dad has half the week with ds he should be doing those things.

GalaxyJam · 10/02/2026 08:38

firstofallimadelight · 10/02/2026 08:32

The fact that the step mum does bedtime and after school clubs. Dad has half the week with ds he should be doing those things.

Maybe he’s at work? Not everyone works a 9-5

britneyisfreebutnotokay · 10/02/2026 08:40

You basically gave your son to her. If you want him back and don’t want to feel left out of his life, start organising play dates for the evenings you have him so you know his friends. Arrange his next birthday celebration. Stop being useless. It’s not too late to turn things around and become a more active parent.

I would feel awful too, but she isn’t to blame. In fact, you should be greatful to her. She’s given your son what you couldn’t. Now that you can, just do it. No need to disrupt the status quo because you’re feeling shitty because no one is particularly bothered about you.

SparklySparkle · 10/02/2026 08:44

Playnoway · 09/02/2026 18:08

It’s hard to say why I’m concerned. It’s just a gut feeling that I’m losing my son. When he wants something he never asks me he always waits till he’s at dads because they’re rich (she has a good job). I invited him on holiday this year and he didn’t want to go because he wants to go on holiday with dad and his family. It’s hard because his mates and their parents all know her and dad but I don’t know any of them.

There were lots of responses very quickly so it took some time for me to read them all.

Take back the weekends.

HideousKinky · 10/02/2026 08:47

You ask whether you should consider changing the arrangements for custody.

This would seem a good idea so that you can spend every other weekend with your son. This way you could have outings together and build up a routine with some special time, just the two of you, in the same way as he has with his stepmother. It's quite unusual for one parent to have all the weekends and may have suited you when he was just a baby but now that he's at school, you don't get to spend much time with him, as you have said.

His Dad seems quite reasonable eg you say he offered to accommodate you regarding a holiday, so perhaps he will also be open about altering the weekends?

Actupfishy · 10/02/2026 08:50

You created vacuum and somebody filled it.
Step mum sounds wonderful!

could you not try renegotiate some weekend time?

BeagleSkunk · 10/02/2026 08:51

Your ‘pain’ is all of your own making so no sympathy here.

HideousKinky · 10/02/2026 08:53

Playnoway · 09/02/2026 18:34

I’ve never taken him as he’s very stressful and enjoys holidays like theme parks or city breaks. He’s not interested in just going to the pool and relaxing which is what I enjoy so always made more sense for him to go with dad.

My exs parents live in France and have done for 15 years. They usually visit them for 2 weeks then go somewhere else after. Ex said he would just go to France this year so he can go with me but he keeps saying no.

I find your comment about why you don't take him on holiday a bit odd.
No 9 year old is likely to be interested in "just going to the pool and relaxing" as they are a bundle of energy, excited to be somewhere different and looking for things to do!
We all go on holidays which are child-centred when our kids are young and put on hold the type of holiday we used to enjoy before we were parents - that's just how it is