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Mumsnet has not checked the qualifications of anyone posting here. If you need help urgently or expert advice, please see our domestic violence webguide and/or relationships webguide. Many Mumsnetters experiencing domestic abuse have found this thread helpful: Listen up, everybody

Is it okay to have a casual relationship with someone that might cause upset in the family?

149 replies

sweetsandcakes · 25/10/2025 18:02

The man in question is my mum’s cousin. Think he is my 2nd cousin. Share about 0.5% more DNA than the general population would do at random so technically not very genetically linked

My mum is very, very easy going but I wonder if this would cause trouble if word got out. Think that side of the family are extremely easy going and friendly. But maybe they’d enjoy the drama of this if they knew. Or if a pregnancy came out of it, for example. I get the sense we are the type to revel in scandals! That’s not going to happen and just an example of how the family dynamic works

He is older than me. Bit younger than my mum. My mum did have me fairly young.

Like many families nowadays, they saw each other a few times a year as children. But possibly see each other once every few/5 years at maximum now. We met at a family event in the summertime. I am now late 20s

This is possibly going to lead to sex. Maybe. Currently messaging each other random stuff. I like him a lot. Definitely want to sleep with him. Can’t and don’t want anything serious, for so many reasons, not just because we share a family tree!

Wondering if my mum will find this somewhat amusing or possibly upsetting? I don’t know. I share absolutely everything with her usually and we are good friends.

OP posts:
sweetsandcakes · 25/10/2025 18:48

FlippyKiYayFlippyFlipper · 25/10/2025 18:37

Grim.

Has he pursued you OP? Is he trying to cause family issues?

We are just talking generally at the moment, and quite a lot. No, don’t think he is trying to cause trouble - He is ‘well regarded’ within the extended family and their poster boy, if you like. Not sure how else to describe things. His mum has always spoken extensively about his exotic, high contrast features and everyone in that family adores him

He is the one they call if they need something sorting etc

OP posts:
RoamingToaster · 25/10/2025 18:50

sweetsandcakes · 25/10/2025 18:27

i suppose because my line of thinking is, it’s just a fun time and some sex. Whereas something serious would have lingering complications and obviously everyone would know

My hope would be that it would remain hidden and just something we once did

That’s much easier to accomplish with men who don’t have connections to your family. What if you’re thinking it’s a one time thing but he wants more? The next family event will be so awkward.

Starseeking · 25/10/2025 18:51

Presumably your mum’s parent and one of his parents are siblings? Which means one of his grandparents is the same person as one of your great-grandparents?

I wouldn’t go there for a bit of casual fun, even less so if it was for the long-term. In fact, I’d just look for a man who was completely unrelated to anybody in my own family to start a romantic relationship with.

SugarPlumpFairyCakes · 25/10/2025 18:51

Just yuck

SirChenjins · 25/10/2025 18:51

Dear god - no. If either my son or my daughter was in a relationship with any of my cousins I'd be very unimpressed with both parties.

Arlanymor · 25/10/2025 18:54

There are so many more people in the world you could go for...

LarryUnderwood · 25/10/2025 18:55

Gosh OP, I think you are perhaps a bit naive to the cultural perception of cousin relationships - even second cousins. I think regardless of how close you are to your mum or how easygoing she is, finding out about a cousin relationship would be unsettling at best. And the same for anyone who found out really. It is quite a taboo.

Edited to add it's taboo for good reason!

IberianBlackout · 25/10/2025 18:58

Honestly it would horrify me. DD and I have a very small age gap so her eventually dating someone close to my age is a real possibility, but my cousin? Please never 😭 it sounds wrong on so many levels.

Even recently my godmother told my mum her son and I could be so happy together and I’m still disgusted, I was planning on visiting him and now I don’t want to go. In my mind we were raised as relatives, I would never look at him romantically.

Owly11 · 25/10/2025 18:59

You sound like you have made your mind up so not sure what you want from this thread. Just because you want to do something it doesn't mean you should. My prediction is that you will regret this at some point.

ZZTopGuitarSolo · 25/10/2025 19:08

OP how would you feel if your daughter was shagging one of your cousins?

FriendlyJoe · 25/10/2025 19:13
Jon Stewart Popcorn GIF

Curious how this pans out

sweetsandcakes · 25/10/2025 19:16

ZZTopGuitarSolo · 25/10/2025 19:08

OP how would you feel if your daughter was shagging one of your cousins?

I don’t know because I don’t have any first cousins or other cousins (apart from my mum’s and their DC) to compare this to. None of my aunts or uncles have had children, strangely

OP posts:
PrizedPickledPopcorn · 25/10/2025 19:20

Don’t mess about on your doorstep. If it goes wrong- one of you catches feelings, unexpected pregnancy, it’s a family drama and upsets far more people- it isn’t just your business anymore.

JLou08 · 25/10/2025 19:24

sweetsandcakes · 25/10/2025 19:16

I don’t know because I don’t have any first cousins or other cousins (apart from my mum’s and their DC) to compare this to. None of my aunts or uncles have had children, strangely

You not having cousins probably explains why you haven't seen an issue with this. Growing up with cousins isn't much further away from the bond developed with siblings for many families.

peony89 · 25/10/2025 19:25

Do it and report back. For our entertainment.

Cucy · 25/10/2025 19:28

I have to be honest.
It reads as though you don’t get much attention and this is the first man that’s showed you attention.

He doesn’t even sound interested in you in that way (why would he be, you’re family).

Are you that desperate for attention, that you are considering having sex and even imagining having a baby with a man simply because he was nice to you?!

Fuck your mum, the rest of the family, your current kids, future kids and your reputation all for some dick?

whatcanthematterbe81 · 25/10/2025 19:30

ewwwwww

PevenseygirlQQ · 25/10/2025 19:31

Your mum and the cousin share grandparents and the cousin’s parents will be your mums aunt/uncle - you share great grandparents with him. Seems pretty related to me

FuzzyWolf · 25/10/2025 19:32

It reads as though you don’t get much attention and this is the first man that’s showed you attention.

Exactly. It’s quite likely he is either isn’t interested and you don’t know to read the signs properly or else he just wants a fuck for the (perceived) challenge without realising you have no self respect or respect for your family.

BreadstickBurglar · 25/10/2025 19:32

I honestly think this is such a shit idea, please don’t do it. Someone in my family did something similar half a century ago nearly and it has still caused a fallout quite recently as well as at the time. Genuinely. Cousins shagging (he’s your first cousin once removed by the way) does not go down well with the general populace.

Find someone older with lovely eyes whose mum wasn’t your great aunt.

FuzzyWolf · 25/10/2025 19:33

I also can’t imagine anything more off putting for someone you wanted to be in a future relationship with than hearing that you were casually fucking your relative. That’s got “run a mile” written all over it.

Slothey · 25/10/2025 19:33

His aunt is your granny (I think). That’s… way too close.

Jellybunny56 · 25/10/2025 19:33

Ew OP, download Tinder and for the love of God stop using family parties as a dating pool!! You as a bare minimum need to cast your net wider than family relations!

BigBoots67 · 25/10/2025 19:34

Eeeee god no

OP if you don’t have experience of having your own 1st cousin then you really need to listen to the majority here.

my cousins were regarded as almost brothers and sisters. We saw each other about the same frequency when we were young, much less now but I still regard them as almost siblings

not only would I be fuming at this but the age gap would be grim as well, making it even worse.

my skin crawls with the thought of my daughter being with my cousin. It’s a huge no

TigTails · 25/10/2025 19:35

Out of all the man in the world, really!?

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