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AIBU?

Share your dilemmas and get honest opinions from other Mumsnetters.

New guy I’m seeing had a fling with someone much younger

353 replies

Sroia · 05/05/2025 21:46

I’m 28. I’ve been seeing a guy who is 32. We’re both professionals in London.

We only very recently made it official. I was getting quite excited - bf is very handsome, kind and charismatic. We have shared interests and he’s an amazing cook.

But I found out over the BH weekend (through a gf of bf’s friend) that bf had a fling with a girl who was 20 around Xmas time. It’s really made me feel weird about bf. I would feel motherly towards a 20 yo guy, not want to get with one.

I guess it just indicates he was comfortable with that power imbalance. It seems a bit gross. I have a brother who is 31 and I know he would never date anyone as young as 20.

I'm not overthinking this one, am I?

OP posts:
Inthetyreshop · 06/05/2025 00:53

Yep would make me feel weird too

Caerulea · 06/05/2025 00:56

Sroia · 05/05/2025 21:59

Fling= didn’t make it to boyfriend/girlfriend status. Were spending time together for around 2/3 months.

Shes at university! He met her through her summer internship at his company

To me, that last bit is key. There's a bit of a creepy dynamic with her being the intern at his company - not unreasonable to see it as an abuse of power. However - nothing illegal & if otherwise everything is good then I guess 🤷🏼

Worth noting that MN is generally quite pro huge age gaps & very much sits on the 'well she was legal' wall. Some of the shit I've seen justified here is mindblowing & usually it's ppl justifying their own experiences, so worth bearing that in mind.

Ultimately you're entitled to feel however you do about it!

Crushed23 · 06/05/2025 01:20

Unexpectedlysinglemum · 06/05/2025 00:32

I had a holiday romance with a 21 year old when I was 32 it was great fun.

I wouldn't worry unless it's a Leo DiCaprio style pattern

I had a fling with a 21 year-old last summer at the age of 34, was absolutely fantastic. ☺️ I certainly didn’t feel motherly towards him!

Frozensun · 06/05/2025 01:27

At 21, I had a ‘fling’ with a 32 year old. We’re celebrating our 44th wedding anniversary next month. Power imbalance - maybe - but I am the stronger personality 😂

Someone2025 · 06/05/2025 02:10

urbanbuddha · 06/05/2025 00:51

Bad enough that she was 20, worse that she was an intern in his company. That's quite exploititive.

Unless she really made a play for him

TracyBeakerSoYeah · 06/05/2025 02:27

Wouldn't bother me in the slightest (as there's nothing wrong with it) but if it really is an issue for you (and you are allowed to have that opinion), then he's not the guy for you.
You should find someone else who fits better/more with your values/ideals/goals etc.

Edit: autocorrect

PIPsqueakybum · 06/05/2025 02:29

When I was 21 my DP was 38, and we ended up having a child together. I think the bottom line is men don’t generally take much persuasion, and if a man in his thirties has the opportunity to have sex with a 20 year old, he’s probably going to go for it. He was single at the time, it didn’t develop into anything, possibly because of the age gap. But I wouldn’t get hung up on it, it’s not particularly scandalous.

NotABeliever · 06/05/2025 02:45

a 10-year age gap - not a problem
dating a summer intern - possibly. Would depend on circumstances

urbanbuddha · 06/05/2025 04:12

Someone2025 · 06/05/2025 02:10

Unless she really made a play for him

Even if she made a play for him. He's old enough to know better.

Crankyaboutfood · 06/05/2025 04:40

Sroia · 05/05/2025 22:56

Stating the source of my discomfort is "jealousy" reduces my valid concern re power dynamics and maturity to a tired stereotype: I’m jealous of the younger, fertile woman. Are you taking the actual piss?

It assumes women can’t think critically or have boundaries without it being rooted in insecurity. I explained my issue clearly—about the ethics of a 32-year-old choosing a 20-year-old for sex—and brushing that off as jealousy is lazy, patronising and dismissive.

Plus I’m a considered very attractive so it makes no sense.

not just a 20 year old, but a 20 year old intern at his company. the different life stages and the fact that she likely admired him/work power thing would give me the ick. i don’t think you are being jealous or unreasonable to feel some pause.

Elektra1 · 06/05/2025 04:50

I was 21 when I got with my ex husband, who was 34 at the time. I have friends with husbands with a similar age gap so I wouldn’t say it is weird or unusual.

Neemie · 06/05/2025 05:28

You would struggle to find many men who wouldn’t happily have a fling with a 20 year old. Your bf was single, had the opportunity and he took it. The older people get the more experiences they will have had especially if they are charismatic, good looking and have not always been in a committed relationship. Out of the many things a 32yr old might have got up to in the past, this is pretty mild. I think you are over thinking it.

babyproblems · 06/05/2025 05:33

There’s really not much difference between 20 and 30. I don’t know why at 28 you’d feel motherly towards a 20 yr old! I thought you were going to say he is 50 and his ex is 18!!

SapporoBaby · 06/05/2025 05:41

It was a fling and she was an adult, albeit a young one. He’s only 32 not even Middle Aged and so likely still sees himself as young.

Clearly it didn’t work out and he then dated you, who is more age appropriate. So I’d say he learnt from dating a much younger woman that he would prefer a woman closer to his age.

JoyousEagle · 06/05/2025 06:09

You say she was a summer intern, but the fling was around Christmas? So did they keep in touch for months, or did they bump into each other randomly after she left the internship?

Newmumhere40 · 06/05/2025 06:23

Sroia · 06/05/2025 00:45

Why are you making my foetus comment about you? Being 20 in London in 2015 would obviously look and feel very different to being 20 in 1985.

It’s not a literal statement. I was very green when I was 20. Despite thinking I had it all figured out. Quite normal ime

Edited

YOU were quite green, many 20 year olds are not. You speak maturely now act maturely and talk to him about it.

rwalker · 06/05/2025 06:30

Can’t see the problem myself but you can so end it and move on

Elasticatedtrousers · 06/05/2025 06:39

I’d be fine with it but you’re not, and very strong in your opinion. It’s clearly a boundary for you so end it. 🤷‍♀️

HomeTheatreSystem · 06/05/2025 06:49

Some women like older men: the 20 yr old might find men her age or just slightly older as too immature and prefer men in their 30s. We can't say it's automatically exploitative unless we know how mature or otherwise she is.

Poisonwood · 06/05/2025 06:49

I was incredibly mature at 20, I’d had to grow up very quick sadly…don’t generalise about people just due to age.

gannett · 06/05/2025 07:09

28 is definitely too young to be feeling motherly about 20-year-olds. They're basically the same generation as you. I would feel quite patronised if I was 20 and someone only a few years older than me treated me like a child.

I wouldn't bat an eyelid at a 20-year-old having a fling with a 32-year-old (give or take a few years I've been on both ends of that). Having a fling with an intern is much more off to me, but I have quite a rigid "absolutely no flings with colleagues" rule which I'm always surprised more people don't share. But if this is your rigid rule then it's up to you what you feel about it!

WimpoleHat · 06/05/2025 07:15

We are talking about two consenting adults here. If he’d been her manager, telling her that getting with him would get her a job? Then yes, not nice. But two people who meet in a workplace, click and decide to spend some time together for a few months? Entirely up to them.

MyOtherCarIsAPorsche · 06/05/2025 07:27

Why is 20 different now? Is it better or worse in your opinion? Explain why you were a foetus as an adult. @Sroia

I wasn't exactly sent down the mines or cleaning chimneys from the age of eight.

Why does the period of time between you being 20 and you being 28 take you from being a foetus to feeling like a mother?

Makes absolutely no sense - literally!

GroovyChick87 · 06/05/2025 07:31

It's hard to say. There's still a lot of mental development that goes on after 20 and in some ways people that age can still be quite immature. I was already a mother at 20 and great at it, but now late 30s I can see that some of my thinking processes, particularly in regard to relationships were quite juvenile and needed development. But maybe we just continue to develop and in my late 50s I'll look back and realise at 37 I was an idiot? I don't think he's a perve for going with her. I think for some people who have teenage or young adult children, it reminds you of how young 20 actually is. You don't have that perspective until your children reach that stage and you see that actually, yes in some ways they are still just kids.
Maybe a power imbalance would have become more visible if the relationship had progressed, but if it was just about sex and both were consenting and happy I can't see a problem.

Westfacing · 06/05/2025 07:51

The 12 year age gap is do-able at that age - however the dating an intern aspect makes the gap just a bit too wide, IMO.

But unless he's made a habit of this I wouldn't be put off.