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AIBU?

Share your dilemmas and get honest opinions from other Mumsnetters.

Not to have known his true age before sleeping together?

487 replies

Lockingthegins · 20/12/2025 22:03

He’s bloody 18! Not 19 until April

Casual conversation and flirting lead to hotel room and sex.

Really mortified to discover he is actually 18. No, he didn’t actually tell me. I assumed he was about 21. I am 28.

I feel so, so awful. Really panicked when I found out the morning after. He doesn’t seem bothered and thinks it’s all fine. Grinning like a Cheshire ca

Good lord, I haven’t scarred him for life, have I? Please someone assure me I’m not sick in the head

I would be furious if I was his mum!

OP posts:
Goldenbear · 22/12/2025 11:58

KimberleyClark · 22/12/2025 10:09

This thread is beyond grim. I had no idea there were so many creepy, sleazy women out there who think it’s ok for mature grown women to hit on teenagers.

And as for this

When I was at school one of the lads was having an affair with a glamorous woman old enough to be his mother. He even brought her to see the school play, our eyes (and the teachers') were out on stalks. During the summer holidays we were together a bit through a mutual friend and he talked about her. He knew it wasn't anything but a sexual relationship for her when her husband was away on business, and he was completely at ease with what he was getting out of it.

would you have been ok with one of your school friends having an affair with a man old enough to be her father?

I know, I agree it's profoundly weird!

Goldenbear · 22/12/2025 12:01

x2boys · 22/12/2025 10:53

I dont think the Op did think its OK to hit on an 18 year olds ,but she presumably met him in a place that only allowed adults in ,and he looked older ,some 18 year olds can and do look a lot than they are ,im the mother of one
Its not likes she's hanging around the local youth club ( do these still exist?)
Preying on 14 year olds like some posters are trying to insinuate
Neither does it like she's going to pursue a relationship

Our youth centre is for young people aged 13-21 which tells you all you need to know about what is considered, 'youth' as distinct from adults in their late 20s.

Goldenbear · 22/12/2025 12:04

Cornishwafer · 22/12/2025 10:13

Nothing at all.
21 (the age OP thought he was) is very much a young adult...she's done nothing wrong...I hope this thread doesn't make her feel bad.

When my ds reaches 18, I'd rather he had a ONS with a woman in her twenties thoughtful enough to be shocked when she finds out his true age over a girl of 15 who he thought was 16 or a woman his own age who had a negative impact or caused problems. That said, id likely never find out about my sons ONS unless he came to me for advice.

I dont think a 21 yo dating a 27 year old is particularly shocking depending on the mindset and maturity of both parties.

If 18 year old are considered boys by their parents, thats just odd....they're young adults.

When your son is 18 you'd rather he had ONS with a woman who is nearly 30, I would say that is a pretty unconventional attitude to parenting you have there!

Needmorelego · 22/12/2025 12:28

Goldenbear · 22/12/2025 12:01

Our youth centre is for young people aged 13-21 which tells you all you need to know about what is considered, 'youth' as distinct from adults in their late 20s.

Yes but I doubt that's where the OP met her 18 year old (especially as she thought he was 21) because why would a 28 year old be going to a youth club.

Needmorelego · 22/12/2025 12:30

Goldenbear · 22/12/2025 12:04

When your son is 18 you'd rather he had ONS with a woman who is nearly 30, I would say that is a pretty unconventional attitude to parenting you have there!

One of my nephews at 18 (almost 19) was working full time on a management training scheme.
If in his free time he decides to go to.a pub/club and have a one night stand....well that's his business.

MrsSkylerWhite · 22/12/2025 12:33

Makemeanonymous · 20/12/2025 22:17

And you are equally approving of a 28 year old guy having a ons with an 18 year old woman?

Would he be a a " happy memory" to her dying day?

I had a 34 year old boyfriend at 18. Had a great time 🤷‍♀️

Cornishwafer · 22/12/2025 12:42

Goldenbear · 22/12/2025 12:04

When your son is 18 you'd rather he had ONS with a woman who is nearly 30, I would say that is a pretty unconventional attitude to parenting you have there!

I said I'd rather that than he slept with a 15 yo he thought was 16 because thats illegal..or a girl his own age who caused him issues (controlling etc.) they're not all perfect.

MerryAndBrightLaLaLa · 22/12/2025 12:48

DustlandFairytaleBeginning · 20/12/2025 22:55

I slept with a 28 year old man when I was 18- I was on my gap year and I totally initiated it. I found his maturity and confidence really sexy. It was just a thing for a few days because we were off to different places on our travels but it is still a happy memory for me 20 years later. They are both adults, I don't think anyone needs to feel guilty.

Me too. It went on for a few months whilst travelling. We still email each other every now and again actually.

I did think about it when I got to 28 and thought it was a bit odd of him. I don’t think I would have done it the other way round. But I’m not disturbed by it all these (30) years later

We both grew up, got married, had kids and happy lives 🤷🏻‍♀️

x2boys · 22/12/2025 12:48

Goldenbear · 22/12/2025 12:04

When your son is 18 you'd rather he had ONS with a woman who is nearly 30, I would say that is a pretty unconventional attitude to parenting you have there!

You need to stop this ,if a 28 year old women is nearly 30 ,than it stands to reason an 18 year old man is nearly 20 ,
Stop trying to make the age gap wider ,to try and make it look worse

x2boys · 22/12/2025 12:52

Goldenbear · 22/12/2025 12:01

Our youth centre is for young people aged 13-21 which tells you all you need to know about what is considered, 'youth' as distinct from adults in their late 20s.

I would find it far more worrying if a 21 year old wanted to hang around with a 13 year old!
21 despute yoyr insistence is very much an adult compared to a 13 year old
I was a fully qualified nurse at 22.

Goldenbear · 22/12/2025 12:59

x2boys · 22/12/2025 12:48

You need to stop this ,if a 28 year old women is nearly 30 ,than it stands to reason an 18 year old man is nearly 20 ,
Stop trying to make the age gap wider ,to try and make it look worse

No, you need to stop protesting too much, it is perfectly normal to round up 'Adults' over 25 to indicate an approximate stage in life. If you are over 28, 38, 48 it is not surprising to do that. Youth is different and this a socially recognised norm hence different minimum wages, and youth services for housing and generally more supportive services. From 16-25 people experience many emotionally development changes. It can hardly be said about someone 26-35, I mean who says that?

Goldenbear · 22/12/2025 13:01

x2boys · 22/12/2025 12:52

I would find it far more worrying if a 21 year old wanted to hang around with a 13 year old!
21 despute yoyr insistence is very much an adult compared to a 13 year old
I was a fully qualified nurse at 22.

The youth centre doesn't mix that whole age group, the point is 'Youth' services from the centre are available up to 21. Unsurprisingly, these are not available for someone nearly 30!

Goldenbear · 22/12/2025 13:03

Cornishwafer · 22/12/2025 12:42

I said I'd rather that than he slept with a 15 yo he thought was 16 because thats illegal..or a girl his own age who caused him issues (controlling etc.) they're not all perfect.

How do you know of this predicting issues and lies, seems quite strange speculation. If he does meet someone his own age are you going to be disappointed!

Goldenbear · 22/12/2025 13:04

Needmorelego · 22/12/2025 12:30

One of my nephews at 18 (almost 19) was working full time on a management training scheme.
If in his free time he decides to go to.a pub/club and have a one night stand....well that's his business.

Your 'nephew'? How is that the same thing as your son?

notacooldad · 22/12/2025 13:06

Our youth centre is for young people aged 13-21 which tells you all you need to know about what is considered, 'youth' as distinct from adults in their late 20s.

There are many sides of looking at age groups. For example Sociologists use the term "emerging adulthood" to describe the period between 18 and 29 so both the man and woman on this thread fit into this demographic.

Needmorelego · 22/12/2025 13:07

Goldenbear · 22/12/2025 13:04

Your 'nephew'? How is that the same thing as your son?

I don't have a son.
I was using him as an example.
I may have not given birth to him but he's part of my family.

x2boys · 22/12/2025 13:08

Goldenbear · 22/12/2025 13:01

The youth centre doesn't mix that whole age group, the point is 'Youth' services from the centre are available up to 21. Unsurprisingly, these are not available for someone nearly 30!

It doesn't mean they are not adults though
I mean my sons under the young person team for diabetes, becsuse hes 19 next week but hes still an adult.

Goldenbear · 22/12/2025 13:11

MrsSkylerWhite · 22/12/2025 12:33

I had a 34 year old boyfriend at 18. Had a great time 🤷‍♀️

I didn't have a boyfriend but I had someone who pursued me that was early 40s when I was early 20s, now I'm just a bit older than him, I think it was exploitative and absolutely gross of him. I also think, why couldn't he attract people his own age. He was completely gutted that I didn't want a relationship with him and couldn't understand why I wanted to be with my husband now (20 years younger) than him.

Goldenbear · 22/12/2025 13:12

notacooldad · 22/12/2025 13:06

Our youth centre is for young people aged 13-21 which tells you all you need to know about what is considered, 'youth' as distinct from adults in their late 20s.

There are many sides of looking at age groups. For example Sociologists use the term "emerging adulthood" to describe the period between 18 and 29 so both the man and woman on this thread fit into this demographic.

Emerging adult up to 29, I've never heard of that before. Sounds like a convenient descriptor for pervs! (Joke)

x2boys · 22/12/2025 13:21

Goldenbear · 22/12/2025 13:11

I didn't have a boyfriend but I had someone who pursued me that was early 40s when I was early 20s, now I'm just a bit older than him, I think it was exploitative and absolutely gross of him. I also think, why couldn't he attract people his own age. He was completely gutted that I didn't want a relationship with him and couldn't understand why I wanted to be with my husband now (20 years younger) than him.

I mean thsts fine you're attracted to who you are attracted but some age gap relationship, s do work for some people ,there is nothing inherently wrong with someone in their 20,s having a relationship with someone ,whom is 40.

Goldenbear · 22/12/2025 13:28

x2boys · 22/12/2025 13:21

I mean thsts fine you're attracted to who you are attracted but some age gap relationship, s do work for some people ,there is nothing inherently wrong with someone in their 20,s having a relationship with someone ,whom is 40.

I just think there is a massive power imbalance (on a whole) and that's known by the older person. This guy was a Director in the company I worked for and I do think fetishised my youth, his references were always about my cuteness, my innocence, he was behind me on the stairs once and smacked me on the backside with a folder, many comments on my cute arse and how he couldn't help himself. He said other stuff and it was a total power imbalance, he knew I didn't have the wisdom or the position in the workplace to sort this out, I just left in the end! That's purely down to age.

Goldenbear · 22/12/2025 13:30

Now I'm a couple of years older I just think WTH!

MrsSkylerWhite · 22/12/2025 13:31

Goldenbear · 22/12/2025 13:11

I didn't have a boyfriend but I had someone who pursued me that was early 40s when I was early 20s, now I'm just a bit older than him, I think it was exploitative and absolutely gross of him. I also think, why couldn't he attract people his own age. He was completely gutted that I didn't want a relationship with him and couldn't understand why I wanted to be with my husband now (20 years younger) than him.

Each to their own. Was fun while it lasted. My husband of 37 years is 6 years older than me.

x2boys · 22/12/2025 13:34

Goldenbear · 22/12/2025 13:28

I just think there is a massive power imbalance (on a whole) and that's known by the older person. This guy was a Director in the company I worked for and I do think fetishised my youth, his references were always about my cuteness, my innocence, he was behind me on the stairs once and smacked me on the backside with a folder, many comments on my cute arse and how he couldn't help himself. He said other stuff and it was a total power imbalance, he knew I didn't have the wisdom or the position in the workplace to sort this out, I just left in the end! That's purely down to age.

Well obviously he was s sleaze
But there would be no power imbalance if you were both doing the same job
When I was a young nurse I often worked with peoole much older than me that I supervised
As I got older I also worked with people much younger than me that were my managers.

notacooldad · 22/12/2025 13:55

Goldenbear * Emerging adult up to 29, I've never heard of that before. Sounds like a convenient descriptor for pervs! (Joke)

To be fair i hadn't either but this thread has sucked me in and its interesting how attitudes get blended with each layer of age eg from what constitutes as being an adult. In the eyes of the law, its 18 in the uk but people are getting upset when an adult does an adult thing with some a bit older, and how people have got side tracked about education, college and so on, also people saying 'There's a big difference between an 18 year old boy and a 21 year old man' when legally they are both the same.

Its been a good thread, but a bit bonkers at times!