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AIBU?

Share your dilemmas and get honest opinions from other Mumsnetters.

AIBU to be hurt by my husbands actions even though his son is sick?

236 replies

Khakiqueen1 · 25/07/2026 15:53

I’ve tried to talk to family about this but everyone says I’m just being selfish and thinking about myself before others.

Myself 29 female and my husband 35 male have being married for just under a year. Our anniversary is the end of July. My DH was married previously and that marriage broke down 5 years ago. He and his ex had 1 child a son aged 8 and me and my husband have no children currently.

My DSS was diagnosed with leukaemia 6 months ago and we’ve done everything to support. His ex doesn’t drive so my husband has taken on driving her around, doing her shopping and taking her to work. I don’t mind this as I understand she needs to be at the hospital quickly and is not doing well to be getting the bus everywhere. I selfishly though was getting very jealous and had a huge argument with my husband last week. During the argument he admitted they slept together shortly after the diagnosis and then again about a month ago but that’s it. He said he regrets it but I don’t have children so cannot understand his pain like she can.

I have told him I don’t want him around her anymore and don’t want him doing jobs for her but he and both our families are saying I’m being selfish.

I understand that his son is very poorly but I feel hurt and betrayed by my husband.

AIBU to request he stays away from her?

OP posts:
Gymnopedie · 26/07/2026 22:52

@boredsoscrollingonMNagain

However, I think if the post was “ my son has leukaemia and could die and in the midst of my grief I cheated on my husband and slept with my sons dad “ the replies would be a lot more sympathetic

Oh no they wouldn't. They might be sympathetic to the fact that she has a very ill child, just as many of these posts have had sympathy for the father having a son with leukaemia. But no sympathy at all for either him or a mythical female poster using it as an excuse to get into bed.

OP the fact that he's admitted to twice probably means it's more. When people are caught out they minimise things down to a level they hope can be forgiven/excused. You want to leave so leave. Don't let anyone, our mother included, tell you you're selfish for wanting to split with a husband who thinks OK to shag his ex while he's married to you. And his 'you don't understand' tells me that he does think that makes it OK.

jacks11 · 26/07/2026 22:23

JLou08 · 25/07/2026 16:28

I think you are being unreasonable to ask him to stay away from her. They need to put their son first and that is highly likely to involve being together sometimes. He is also right that you can't understand what he is going through like his ex does but that's a shit reason to give for sleeping with her.
I think ending your relationship with him would be the right thing to do. But staying with him and adding conditions that impact his son is not right.

Exactly this.

They are going to have to continue co-parenting a very sick child, they are going to have to have ongoing and frequent contact. You can’t try to stop that, even though I understand why you would want to have this as a condition for staying with him- it’s simply unrealistic.

I can sort if see how this might occur- heightened emotions, comforting each other etc- but it wasn’t inevitable and his actions were still a series of choices he made. He chose to betray your trust, he needs to own it. I think his reasoning that you can’t understand is nonsense, just an excuse.

But equally, you don’t have to put up with being cheated on. Only you can decide whether it’s a deal-breaker for you (I think it would be for me) or if you want to work on your relationship with the knowledge he will have ongoing, close contact.

Pssedoffathis · 26/07/2026 22:12

This is going to be a very long and emotional journey for him and his ex wife. I don’t think I would stick around for it knowing he has cheated on you with her, it shows that they aren’t two people co parenting, they are more deeply entwined than that. They will need each other during this period and they have shown they are not purely platonic friends who some time ago used to be in a relationship. Their child needs them. It’s a total mess for you. Sorry OP I would definitely be walking away. And with your head held high as you supported him and her by giving them time and space and they did that to you. It’s time to walk away.

Chilly80 · 26/07/2026 22:12

FloofTrousers · 25/07/2026 15:56

Just leave. There's no way he can't have contact with her while their child is so poorly, and you can't trust him to be faithful. You only have control over your own actions.

This

WildLeader · 26/07/2026 22:01

End this. He’s making an idiot out of you, and you’re better than that.

he needs to focus on his son anyway

Survivor2020 · 26/07/2026 22:00

Khakiqueen1 · 25/07/2026 16:00

Thank you. I wanted to leave him but my mum was trying to convince me the correct thing to do was to stay. I feel much happier now that I’m making the correct choice.

Please leave him. You’ll regret it later if you don’t. You’ll find someone that deserves you. Your mum isn’t the one living your situation

AnneLovesGilbert · 26/07/2026 21:59

Your mum is an idiot. Your husband is revolting. His ex is shameless. You deserve so very very much better. Please divorce him, get it going this week.

Strawberrydelight78 · 26/07/2026 21:59

He’s cheated so for me it would be over. But you you can’t surely expect them to keep away from each other while their son is going through this so YABU. They’re son will always come first. Walk away he obviously still has feelings for her.

Survivor2020 · 26/07/2026 21:56

I think your marriage is over as he definitely still has feelings for her. I would ask for a divorce before you have children together. If you have a child then it becomes much more messy and you will never be able to completely sever ties. LEAVE HIM

Floppyearedlab · 26/07/2026 21:49

Revolting man
Leave him. Let his ex have him if she is that special. You deserve better

FlamingJune2026 · 26/07/2026 21:49

I was about to say you were being unreasonable until you said they slept together.
Leave now and begin again.

CharlieEffie · 26/07/2026 21:46

Okay so i started reading thinking you were going to be the AH. Than i finished it and seriously...WTF. Two things...you need to leave him a sick child is not an excuse to shag your ex, and your family thinking your selfish is messed up

catlover123456789 · 26/07/2026 21:45

You are only 29. Put this one down to experience and do not give this man any more of your time. He is in turmoil over his child but nothing excuses his actions. Are you able to be financially independent, so you don't have to go back to mum?

BrownWoodenChair · 26/07/2026 21:27

Leave. Its a terrible situation for them but he cheated on you. You're young lots of time to find someone else if that's what you want

MinnieCoops · 26/07/2026 21:26

What a cunt. Leave him and be happy

Flowerponyfan · 26/07/2026 21:24

What planet is your mother on!!

littlejlr · 26/07/2026 21:19

GertrudePerkinsPaperyThing · 26/07/2026 20:44

It is terrible that his son has been diagnosed with such an awful illness. The driving her to the hospital (and presumably being at the hospital for long periods himself) are not unreasonable of him.

However, he has cheated on you. Twice. With his ex wife. That surely means the marriage is over?

It is not wrong or selfish of you at all to leave such a marriage.

Totally agree. Yes, his son is ill, and he says he's only done it twice with her. Once a cheat, all trust is gone, and your marriage will never be the same again.

superspideysense · 26/07/2026 21:13

Agree with others that it’s over.

terribly sad for them with their son but he shouldn’t have cheated and it’s no excuse. They won’t be able to be apart due to their son’s needs.

Rewis · 26/07/2026 20:58

Having a sick child doesn't give you a free pass to cheat whenever you feel like it. He actively made a decision to have sex with his ex and is using his son to excuse it like it is no big deal and you're selfish for being upset. He can't cut contact with her. Hard to say if his support is too much (ignoring the sex) but he is unwilling to do anythjng about boundaries.

Wheresthebeach · 26/07/2026 20:51

How awful of him to use his son’s illness as an excuse for cheating repeatedly. Dump and run now.

Kirbert2 · 26/07/2026 20:47

boredsoscrollingonMNagain · 26/07/2026 20:29

I am not downplaying what OP has been through and she should not have to swallow her emotions.

However, I think if the post was “ my son has leukaemia and could die and in the midst of my grief I cheated on my husband and slept with my sons dad “ the replies would be a lot more sympathetic

If that post also used their sick child as an excuse for cheating, I'd also say it was disgusting.

Middleagedspreadisreal · 26/07/2026 20:46

Khakiqueen1 · 25/07/2026 16:00

Thank you. I wanted to leave him but my mum was trying to convince me the correct thing to do was to stay. I feel much happier now that I’m making the correct choice.

You Mum should be telling you not to settle for a cheater. It's your life and your self respect

GertrudePerkinsPaperyThing · 26/07/2026 20:44

It is terrible that his son has been diagnosed with such an awful illness. The driving her to the hospital (and presumably being at the hospital for long periods himself) are not unreasonable of him.

However, he has cheated on you. Twice. With his ex wife. That surely means the marriage is over?

It is not wrong or selfish of you at all to leave such a marriage.

IJustMight · 26/07/2026 20:43

Wow. Using these awful circumstances to defend his cheating on you. Twice.

Tell him to get to fuck.

Just get out of there; you deserve better.

monkeysox · 26/07/2026 20:40

Bridgertonisbest · 25/07/2026 15:55

Forget it, your marriage is over. He's cheated on you, twice with his ex wife.

This