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AIBU?

Share your dilemmas and get honest opinions from other Mumsnetters.

To not lend my mum money

228 replies

LastMemory · 10/09/2026 10:21

My mum and dad split up 5 years ago as my mum had an affair. My dad was completely devastated. My mum apparently regretted it and they tried to save their relationship but after trying for about a year, my dad said he couldn’t get over it and they split up.

My relationship with my mum never really recovered. I hate cheating and my mum says my dad was a great husband, she just got flattered by the other man. She told me it was her biggest regret and cried a lot but I just couldn’t see her in the same light again. Sometimes I think I hate her.

I have recently found out that she has been seeing the man that she had an affair with again, for at least 18 months. She doesn’t know that I know.

My mum is struggling financially and has asked us to lend her money. Apparently she is facing losing her house. I have refused to give her the money because I feel so resentful of what she has done to our family and that she is now seeing this man again and I am ready to cut her out of my life completely.

AIBU?

OP posts:
Dracolina · 10/09/2026 11:55

LastMemory · 10/09/2026 10:21

My mum and dad split up 5 years ago as my mum had an affair. My dad was completely devastated. My mum apparently regretted it and they tried to save their relationship but after trying for about a year, my dad said he couldn’t get over it and they split up.

My relationship with my mum never really recovered. I hate cheating and my mum says my dad was a great husband, she just got flattered by the other man. She told me it was her biggest regret and cried a lot but I just couldn’t see her in the same light again. Sometimes I think I hate her.

I have recently found out that she has been seeing the man that she had an affair with again, for at least 18 months. She doesn’t know that I know.

My mum is struggling financially and has asked us to lend her money. Apparently she is facing losing her house. I have refused to give her the money because I feel so resentful of what she has done to our family and that she is now seeing this man again and I am ready to cut her out of my life completely.

AIBU?

No, you're not. I'd feel exactly the same as you.

nomas · 10/09/2026 11:55

LastMemory · 10/09/2026 11:26

The financial situation seems to be result of her own poor decisions. She came out of the divorce with the same as my dad who is fine. My dad bought a smaller house straight away and has been sensible going back to working 5 days where he had reduced to 3. My mum decided to give up work, go on lots of holidays and rent. She seems to have burned through her money. The affair partner could be part of that, I have no idea as I don’t officially know they’re together. She obviously deliberately not sharing that to keep us in her life and so she can ask for cash.

Edited

Setting aside the affair, you have no guarantee the financial help will be used correctly and secure her housing situation.

She could end up in the same situation again if she knows you will step in and help her.

Can't she move in with her affair partner?

LastMemory · 10/09/2026 11:59

notretiredyet01 · 10/09/2026 11:37

You really believe she is only keeping in contact with you do she can ask for money? If so then the answer will have to be no. But if you dont really think that, and its your resentment coming
out then the anwer depends a bit on whether you can afford it; do you think she will pay it back (ie will she be financially prudent enough to control her spending and not get into more financial trouble); if she doesn't pay it back would it matter to you...and so on. I have to say the answer is likely to be no but thats a very hard thing. I would have a very serious conversation with her about all of it before deciding.

I think she wants us in her life so I think she’s keeping quiet about being with the affair man so that we remain so. I think she’s keeping quiet because she knows that being with him could potentially end all contact we have with her.

OP posts:
LastMemory · 10/09/2026 12:00

nomas · 10/09/2026 11:55

Setting aside the affair, you have no guarantee the financial help will be used correctly and secure her housing situation.

She could end up in the same situation again if she knows you will step in and help her.

Can't she move in with her affair partner?

Edited

He is still with his wife. I don’t think his poor wife knows anything.

OP posts:
nomas · 10/09/2026 12:01

LastMemory · 10/09/2026 12:00

He is still with his wife. I don’t think his poor wife knows anything.

Oh poor woman.

What kind of sum is your mother asking for? Is it roughly in the tens of thousands?

Sparrowsandbudgies · 10/09/2026 12:03

I wouldn’t be giving her any money. But then I don’t believe in lending money to anyone - beyond a very tiny sum, like a tenner or something. She’s an adult and will have to sort herself out.

WiltedLettuce · 10/09/2026 12:15

Sparrowsandbudgies · 10/09/2026 12:03

I wouldn’t be giving her any money. But then I don’t believe in lending money to anyone - beyond a very tiny sum, like a tenner or something. She’s an adult and will have to sort herself out.

This. I wouldn't lend any money.

But I think you're being very judgmental about the affair tbh. What happened was between her and your dad and you were adults at the time. It's very hard to know precisely what is going on in someone else's relationship and, while people should clearly put their young children first in the decisions that they make (although that doesn't necessarily mean staying miserably together), there must come a time when parents of adult children are free to pursue their own personal lives without their children's approval to some extent, even if that means making bad decisions.

Notmycircusnotmyotter · 10/09/2026 12:19

I also hate cheating but I think you're being very harsh on your mother. She made bad choices and she's lost a lot. Have some compassion, she's your mother.

Yetone · 10/09/2026 12:19

WiltedLettuce · 10/09/2026 12:15

This. I wouldn't lend any money.

But I think you're being very judgmental about the affair tbh. What happened was between her and your dad and you were adults at the time. It's very hard to know precisely what is going on in someone else's relationship and, while people should clearly put their young children first in the decisions that they make (although that doesn't necessarily mean staying miserably together), there must come a time when parents of adult children are free to pursue their own personal lives without their children's approval to some extent, even if that means making bad decisions.

I will never condone an affair while people are married to someone else. It involves lies and more lies. If you are in a bad relationship then you end it before starting an affair. OP’s father found out and they did try to make a go of it so he doesn’t sound that controlling.

Madamecholetsbonnet · 10/09/2026 12:21

She should go back to work!

Tablesandchairs23 · 10/09/2026 12:21

Sorry mum i can't afford to lend you money. End of conversation.

LastMemory · 10/09/2026 12:22

nomas · 10/09/2026 12:01

Oh poor woman.

What kind of sum is your mother asking for? Is it roughly in the tens of thousands?

Edited

£9k to clear all debts. About half of that is rent arrears I’m told. She is working again now so apparently if I can lend her this, she will be able to pay future rent but it’ll take years to pay me back, if she even does. If it was my dad, I’d give it him without hesitation but I begrudge helping my mum after what she has done.

OP posts:
Idontjetwashthefucker · 10/09/2026 12:23

Itsseweasy · 10/09/2026 11:28

Ugh.

Seconded, what an utter load of shite

Happyjoe · 10/09/2026 12:26

Seeing your update, no, I'd not give her the money (you know you won't get it back, giving even more ill-feeling). If it had been through illness or something she had less control over I may have been tempted. But through not working/holidays then sorry, she deserves to lose it. Hopefully she will have a little left over to buy herself a little flat. A roof over head is the most important bill of all.

Sorry about her affair, always so shitty to do to others.

EmmaOvary · 10/09/2026 12:26

£9K is an absolutely vast sum of money. Especially as her rent arrears are her own doing, since she stopped working and burned through the divorce settlement. She needs to grow up and take responsibility for her own actions.

thepariscrimefiles · 10/09/2026 12:26

Yolo12345 · 10/09/2026 10:56

your mum is just a human being and it is very hard to raise children and maintain a marriage. This might be hard to hear but your Dad is no angel…he is also human and we all make mistakes. Personally I would support my mum, she gave you life and did her best to raise you, sacrificing her body, mind and soul whilst you were little…

Urgh! 'Sacrificing her body, mind and soul'! What a load of ridiculous claptrap.

OP has said

'My mum decided to give up work, go on lots of holidays and rent. She seems to have burned through her money.'

There is no way that OP should be bailing her mum out by giving her money. Her mum should go back to work.

LastMemory · 10/09/2026 12:30

WiltedLettuce · 10/09/2026 12:15

This. I wouldn't lend any money.

But I think you're being very judgmental about the affair tbh. What happened was between her and your dad and you were adults at the time. It's very hard to know precisely what is going on in someone else's relationship and, while people should clearly put their young children first in the decisions that they make (although that doesn't necessarily mean staying miserably together), there must come a time when parents of adult children are free to pursue their own personal lives without their children's approval to some extent, even if that means making bad decisions.

I am judgemental about the affair, she deserves to be judged for it. I don’t apologise for that. It affected the whole family so it’s not true that it’s just between them. My mum has said my dad did nothing wrong, she was just flattered by attention from elsewhere. They weren’t miserable and my mum wanted to stay with my dad, he tried but couldn’t deal with her betrayal. She is free to do what she likes but there are consequences. She has proven she is free to make bad decisions and now wants me to cough up for them. Being an adult means taking responsibility for your own actions imo and when you hurt others, you can’t expect help and support from them.

OP posts:
NovemberMorn · 10/09/2026 12:30

I couldn't vote one way or the other, whatever you decide is your decision.
How did you and your mum get on before the affair? A bad wife can still be a loving parent.

If I were in that situation, I would give my mum the money because I loved her and she loved me.
What happened between your parents was their business; when marriages go wrong, someone always gets hurt.

Whyherewego · 10/09/2026 12:31

I think there are 2 different things here. The loaning of money ... which I'd recommend you do not do given what you've described ie your mum's poor financial decisions post divorce. Unless you are fabulously wealthy and 9k is pocket change but otherwise I'd say no. She needs to figure this out on her own.
The ongoing relationship or not with her is a separate matter. I strongly believe that as offspring we cannot know all that goes between a married couple and there may be more to the story than you know or have been told. So for that reason I wouldn't go NC "just" because she had an affair, no matter your views on the ethics. What I would be looking at is the effort and behaviour since then. My dad had an affair and it was hard for all of us but I was prepared to maintain a relationship with him. But he demonstrated time and time again that his priorities were his new family and alcohol. So I dropped the rope. We speak now maybe once a year. He's like a distant relative and I have virtually nothing to say to him. I judged his behaviour post affair rather than the act itself if you see what I mean

NovemberMorn · 10/09/2026 12:32

LastMemory · 10/09/2026 12:30

I am judgemental about the affair, she deserves to be judged for it. I don’t apologise for that. It affected the whole family so it’s not true that it’s just between them. My mum has said my dad did nothing wrong, she was just flattered by attention from elsewhere. They weren’t miserable and my mum wanted to stay with my dad, he tried but couldn’t deal with her betrayal. She is free to do what she likes but there are consequences. She has proven she is free to make bad decisions and now wants me to cough up for them. Being an adult means taking responsibility for your own actions imo and when you hurt others, you can’t expect help and support from them.

Does your mum know you feel this way?
If she does, I think she is wrong to put you in the position of bailing her out financially.

Error404FucksNotFound · 10/09/2026 12:36

Sounds like realistically you would be giving her 9k because it doesnt sound like she'd be able to pay you back.

It's not unreasonable at all to not want to give / lend such a huge sum of money to anyone.

Nighttimenoise · 10/09/2026 12:38

You're going to need to lend quite a substantial sum if she's at risk of losing her house. She's made her bed .

MossMystery · 10/09/2026 12:41

Putting the affair and your feeling towards you mum aside, even if you had a good relationship with her, I would recommend against lending such a large sum to someone who's clearly bad with money

ScaramoucheCanYouDoTheFandango · 10/09/2026 12:43

As an adult it is time you drew a line under the affair, move on, and unless you think she is vulnerable keep out of her current love life.

From a financial support point of view if you cannot afford to lose it don't lend it.

But if she is at risk of losing her home and needs help tell her you can't afford it, offer to help her work out how to pay off her debt/live within her means with debt services, benefits, budgeting etc. If she declines your offer then that's on her.

LarryForPrimeMinister · 10/09/2026 12:44

Just say no, shes made bad decisions and its not your job to pay for it.