Please or to access all these features

AIBU?

Share your dilemmas and get honest opinions from other Mumsnetters.

AIBU to not invite my 20 year old son on a trip with his siblings?

513 replies

vhydr · 12/08/2026 09:28

Long one, sorry.

Back in March I found out my husband was having an affair with a much younger colleague. 26 years together. I was devastated, still am honestly. We have four kids my eldest is a son, 20, then a son, 19, then a daughter, 17, and my youngest, a daughter, 15. I moved out with the younger three. My eldest son chose to stay with his dad.

I never wanted my kids to pick sides. But I won't lie, it stung. I expected a bit of loyalty, not because he owes me anything as his mother, but because his dad cheated on me and lied to my face for who knows how long. My eldest told me I was "breaking up the family" by leaving. That one really got me.

My other son and both daughters are angry at their dad too, but they came with me and we've been doing okay. Therapy, lots of time together, dinners, days out. Financially we're fine, both high earners, so at least that's not a factor.
My eldest tried reaching out a few times and I'll admit I went quiet on him for a bit. I wasn't ignoring him out of hate, I was just raw.

Then my younger daughter graduated last month and she chose not to invite her eldest brother, she invited their dad instead. He was hurt, said something angry to her, it turned into a whole sibling blowup, his brother and sister ganged up on him. It's been tense since.

He's told me he doesn't think he'll ever be okay if I date or remarry one day. Says he wants nothing to do with a "blended family." I'm not seeing anyone, not looking to either, but that's clearly already a fault line with him.

Last week I took my younger son and two daughters away for the summer, posted a few photos. He saw them and texted "you could have invited me mama, but it's okay, I'm not your son anymore because your actions are making sure of that. I feel like I have no family and everyone hates me, I'm the outsider."

That gutted me. He's still my son and I love him. But he's also an adult who chose to stay with the parent who broke this family, and I didn't think to include him this time given where things stand with his sisters.

So, AIBU?

OP posts:
Baileyss · 12/08/2026 11:06

Maybe the father despite his affair, is not emotionally blackmailing his children. Maybe the son can understand why the father had an affair 🤷🏻‍♀️

BlueFahrenheit · 12/08/2026 11:05

Tessasanderson · 12/08/2026 11:00

You do realise he doesnt have the casting vote on who either of them have a relationship with, dont you?

It is entirely reasonable for a son who has only known his parents relationship to struggle to see his mum having future relationships. The fact his dad is in one is probably something he is dealing with himself.

All he has said is his honest opinion at the current time. Is it so difficult to imagine a young man saying this whilst trying to come to terms with his mum ditching him, his dad shagging about and his siblings putting up the barriers. Most would say things they may mean at the time but further down the line accept they were wrong.

Yet OP's son feels the need to assimilate comfortably into his father's world while condemning his mother.

Tasteless. Poor judgement.

He is 20, not 12.

BlueFahrenheit · 12/08/2026 11:03

aCatCalledFawkes · 12/08/2026 10:57

The parents have only been separated since March after a long marriage, it's way to soon for a blended family on either side.
No he shouldn't be telling her that, but OP has hardly helped herself by admitting she has been standoffish with him because he chose to live with his father - which is a totally valid choice to make.

OP was understandably wounded by his deeply unpleasant remarks. I would have stepped back and allowed him the opportunity to reflect upon the absurdity he had so carelessly allowed to pass his lips.

I would never allow my DC to ever speak to me in this manner without consequence.

Cherrytree86 · 12/08/2026 11:02

waterrat · 12/08/2026 11:00

I actually find this hard to believe

you 'went quiet' on your own son? He is your child. He had conflicted painful emotions - you and your husband very clearly wanted the kids taking sides - you certainly did. That is specifically waht divorcing parents are NOT supposed to do.

He was a teenager at the time, his brain hadn'f fully developed

You are supposed to always be there for him! That's how it is being a parent.

@waterrat

What about OP’s feelings? Do they not count because she is a woman? Because she is a mother? Her son is an adult he should be capable of expressing empathy towards his poor mother.

waterrat · 12/08/2026 11:00

I actually find this hard to believe

you 'went quiet' on your own son? He is your child. He had conflicted painful emotions - you and your husband very clearly wanted the kids taking sides - you certainly did. That is specifically waht divorcing parents are NOT supposed to do.

He was a teenager at the time, his brain hadn'f fully developed

You are supposed to always be there for him! That's how it is being a parent.

BlueFahrenheit · 12/08/2026 11:00

LittleBearPad · 12/08/2026 10:54

Clearly you’re very invested in this situation but any family with step parents/siblings is more complicated, note I didn’t say it was better or worse.

It's a forum, dear—a point of discussion.

Can nuclear families not experience such complexities in equal measure?

A shallow gaze you have.

Tessasanderson · 12/08/2026 11:00

BlueFahrenheit · 12/08/2026 10:50

Yet, the father can entertain other women?

Hogwash.

You do realise he doesnt have the casting vote on who either of them have a relationship with, dont you?

It is entirely reasonable for a son who has only known his parents relationship to struggle to see his mum having future relationships. The fact his dad is in one is probably something he is dealing with himself.

All he has said is his honest opinion at the current time. Is it so difficult to imagine a young man saying this whilst trying to come to terms with his mum ditching him, his dad shagging about and his siblings putting up the barriers. Most would say things they may mean at the time but further down the line accept they were wrong.

Cherrytree86 · 12/08/2026 10:58

Ocelotfeet27 · 12/08/2026 10:44

Also shocked that PPs are suggesting he is controlling for not wanting to be part of a blended family - who would? It's generally very difficult and in some cases awful. He's obviously hurting. People on here are crazy sometimes.

@Ocelotfeet27

good job he is an adult then and his mother’s relationships are none of his business

aCatCalledFawkes · 12/08/2026 10:57

BlueFahrenheit · 12/08/2026 10:47

What's wrong with a blended family, exactly?

The parents have only been separated since March after a long marriage, it's way to soon for a blended family on either side.
No he shouldn't be telling her that, but OP has hardly helped herself by admitting she has been standoffish with him because he chose to live with his father - which is a totally valid choice to make.

BlueFahrenheit · 12/08/2026 10:56

LittleBearPad · 12/08/2026 10:53

We have no idea what the exh is up to post split

Are you being wilfully obtuse, or is this simply a lapse in judgment?

The father deliberately broke the family apart. He has likely moved on to another woman, and OP's son is projecting.

Cherrytree86 · 12/08/2026 10:55

Your son sounds quite misogynistic, tbh…like it’s ok for his father to have an affair but not ok for OP as a now single woman to have a relationship! Yeah, no.

BillieWiper · 12/08/2026 10:55

BlueFahrenheit · 12/08/2026 10:46

I agree entirely.

It is manipulation and misogyny dressed up as moral outrage.

Apparently, the father may sow chaos without consequence, yet OP is expected to endure censure for daring to pursue a relationship of her own.

Yeah. He sounds a right wrong 'un that son. He doesn't deserve a holiday with OP.

andthat · 12/08/2026 10:54

theresnolimits · 12/08/2026 10:49

Sorry OP, but I think you have got this completely wrong. You have chose to frame DS as the villain by staying with his father. His family was falling apart (I expect there were rows and recriminations) and he has chosen to stay in his ‘safe place’. Was it near friends, girlfriend/boyfriend, college, part time job? He is allowed to choose the familiar in a time of turmoil.

But instead of accepting that, you have blamed him, ignored him, encouraged division with his siblings and thrown a family holiday without him in his face. Listen to him - he feels an outsider, he has no family. You did that.

The comment about you moving on was stupid and I bet there’s more context. But it is also a wounded young man who is emotionally immature and is clearly anxious about being sidelined yet further. Again, listen to why he might have said that.

You need to fix this. He’s not responsible for your pain but you are for some of his. Reach out. Include the siblings. Be his mother.

And this. Excellent post @theresnolimits

LittleBearPad · 12/08/2026 10:54

BlueFahrenheit · 12/08/2026 10:52

Plenty of blended families manage quite gracefully; your view is simply rather narrow.

Clearly you’re very invested in this situation but any family with step parents/siblings is more complicated, note I didn’t say it was better or worse.

BlueFahrenheit · 12/08/2026 10:54

LittleBearPad · 12/08/2026 10:52

You can argue that. But it’s not true from the son’s point of view.

OP’s son would do well to open his eyes and free himself from his father’s rather tainted perspective. His condemnation would be far better directed at his father’s conduct.

andthat · 12/08/2026 10:53

ColdAsAWitches · 12/08/2026 09:34

You made your choices to exclude him before the holiday. It reads like you do lots of things with your other kids. He also reached out to you several times but you didn't respond. Of course he's feeling hurt. If you don't try to fix this now your relationship with him will never recover.

This.

You are punishing your son for your husbands affair. That is not ok and therefore YABU.

LittleBearPad · 12/08/2026 10:53

BlueFahrenheit · 12/08/2026 10:50

Yet, the father can entertain other women?

Hogwash.

We have no idea what the exh is up to post split

BlueFahrenheit · 12/08/2026 10:52

LittleBearPad · 12/08/2026 10:49

It’s more complicated than an ‘unblended’ one - no matter what anyone says.

Plenty of blended families manage quite gracefully; your view is simply rather narrow.

LittleBearPad · 12/08/2026 10:52

BlueFahrenheit · 12/08/2026 10:49

The second her cheating ex-husband penetrated another woman was when his family broke apart.

You can argue that. But it’s not true from the son’s point of view.

BlueFahrenheit · 12/08/2026 10:50

LittleBearPad · 12/08/2026 10:48

Piffle.

It’s 5 months since the marriage ended. Of course he can’t see his mother with a new partner. In time matters will change.

Yet, the father can entertain other women?

Hogwash.

theresnolimits · 12/08/2026 10:49

Sorry OP, but I think you have got this completely wrong. You have chose to frame DS as the villain by staying with his father. His family was falling apart (I expect there were rows and recriminations) and he has chosen to stay in his ‘safe place’. Was it near friends, girlfriend/boyfriend, college, part time job? He is allowed to choose the familiar in a time of turmoil.

But instead of accepting that, you have blamed him, ignored him, encouraged division with his siblings and thrown a family holiday without him in his face. Listen to him - he feels an outsider, he has no family. You did that.

The comment about you moving on was stupid and I bet there’s more context. But it is also a wounded young man who is emotionally immature and is clearly anxious about being sidelined yet further. Again, listen to why he might have said that.

You need to fix this. He’s not responsible for your pain but you are for some of his. Reach out. Include the siblings. Be his mother.

Tessasanderson · 12/08/2026 10:49

Just for the record, the son is 20. He is a young man. He doesnt need to be part of any blended family. It hasnt got a thing to do with his mother or his father whether he integrates into their future relationships with other partners. All he has said is he cannot see himself acccepting his mum in future relationships. Big deal. His relationship with his mum is all that matters.

The here and now is he has a mum on one side and a father on the other. Where he lives/sleeps should have zero bearing on how his relationship with either goes.

LittleBearPad · 12/08/2026 10:49

BlueFahrenheit · 12/08/2026 10:47

What's wrong with a blended family, exactly?

It’s more complicated than an ‘unblended’ one - no matter what anyone says.

BlueFahrenheit · 12/08/2026 10:49

LittleBearPad · 12/08/2026 10:46

From a certain perspective it was OP who broke up the family because she wouldn’t (entirely reasonably) put up with her exh behaviour. But the 20 year old isn’t seeing the reasonableness of walking out. He just sees his mother leaving.

The second her cheating ex-husband penetrated another woman was when his family broke apart.

sunnyfeet · 12/08/2026 10:48

What about his arsehole father who was shagging someone young enough to be his offspring while he was married?! Not one word to say against him?

THIS!!! Have you reminded him about this, OP? His father is the one who broke up the family