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AIBU?

Share your dilemmas and get honest opinions from other Mumsnetters.

To tell stepson’s girlfriend she’s not sleeping over again after what I walked in on??

598 replies

AutumnMum28 · 30/09/2025 14:10

DSS (17) has had his girlfriend over a few times now, I’ve been fine with it, they sit in the living room with snacks and films etc, nothing major. Last night OH was on nights and I went up early with baby (who doesn’t sleep 🙄). Came down about midnight because I’d left washing in the machine and nearly had a heart attack when I walked past the living room… let’s just say I saw FAR too much, blanket half on the floor, both of them half naked 😳 I honestly feel sick even writing this.

I didn’t say anything in the moment, just stomped upstairs, but now I feel so uncomfortable in my own house. I’ve got younger DC (10, 5, 17mo) and it just doesn’t sit right at all. He’s technically still in sixth form, under our roof, and I don’t want this kind of thing going on.

OH says “he’s nearly an adult, better they’re safe here than in the park” 🙄 but I don’t want my home turning into a hotel room. I don’t even know how to look her in the eye now, poor girl looked mortified too.

So AIBU to tell him she’s not sleeping over anymore? Or do I need to suck it up and accept it?

OP posts:
Hiptothisjive · 30/09/2025 14:45

Sorry OP but you let your 17 year old step son's girlfriend stay over and then were surprised they were having sex? Or were you find with them having sex just not in a communal place? Could have seen this coming a mile off I think.

whattheysay · 30/09/2025 14:45

He was in his bedroom. If you don’t provide a private space for him what would you like him to do? It should be private but he doesn’t have that.
Your little children will soon be 17 and you’ll have to deal with this again.
Don’t walk into the living room when he’s in there.

Bringitonicancope · 30/09/2025 14:45

Lotsnlotsoflove · 30/09/2025 14:39

I think you are being a drama queen. They are 17 - of course they are having sex! Just tell him to do it in his bedroom and not in the lounge. Making a big fuss over this and saying 'you feel uncomfortable in your own home' because a 17 year old has had sex in it is highly pearl-clutching behaviour imo. Grow up.

Edit to say: If you haven't given him a bedroom, what do you expect? He is almost an adult and entitled to have sex with his gf. If an older teenager is living with you, your job is to provide them with the space to live their life.

Edited

OP is allowed to feel as she feels.

The amount of pressure on young people to start having sex at really young ages because they are told by peole like you it's normal and inevitable is actually disgraceful.

And it's disgraceful that you describe OP by that derogatory term " pearl clutcher" just because she has different values from.you.

Stoneblock · 30/09/2025 14:45

AutumnMum28 · 30/09/2025 14:31

No he doesn’t even have his own room 😩 that’s half the issue!! We’ve only got 3 bedrooms so DS1 has his little Lego shrine room, the 2 little ones (5 + baby) are crammed in the box room, and me + OH in the main. DSS has been on a sofa bed in the living room since he moved in full time last year. It’s not ideal but what can we do, can’t magic another room.

I haven’t spoken to him yet, OH just sort of shrugged and said “he’s nearly 18, leave him be” 🙄 which is easy for him to say when he wasn’t the one who walked in!! I feel so awkward I can’t even look at DSS this morning, he just sloped off to sixth form like nothing happened. Not sure if OH will actually say anything to him either tbh, he hates confrontation.

I just don’t know what the right balance is, like I get he’s nearly grown up but surely in OUR family living room when the little ones could come down any time isn’t on??

In that case you need to treat the room as his private space during certain hours, and not be walking in unannounced, regardless of whether GF is there.

Lotsnlotsoflove · 30/09/2025 14:45

AutumnMum28 · 30/09/2025 14:31

No he doesn’t even have his own room 😩 that’s half the issue!! We’ve only got 3 bedrooms so DS1 has his little Lego shrine room, the 2 little ones (5 + baby) are crammed in the box room, and me + OH in the main. DSS has been on a sofa bed in the living room since he moved in full time last year. It’s not ideal but what can we do, can’t magic another room.

I haven’t spoken to him yet, OH just sort of shrugged and said “he’s nearly 18, leave him be” 🙄 which is easy for him to say when he wasn’t the one who walked in!! I feel so awkward I can’t even look at DSS this morning, he just sloped off to sixth form like nothing happened. Not sure if OH will actually say anything to him either tbh, he hates confrontation.

I just don’t know what the right balance is, like I get he’s nearly grown up but surely in OUR family living room when the little ones could come down any time isn’t on??

It's not YOUR family living room though, if you have given it to him as his sleeping space. He needs privacy; he has the right to space where he can experiment sexually, even if that's touching himself! How can he do that in a room where younger siblings might come down any moment? You have lots of options. Lego shrine becomes a double room with bunk beds for two of yours, with the youngest in with you and DH on a smaller bunk, and SS has his own room in the box room. Or you make the larger single work for 3 younger kids, or you and DH go to the living room. It is outrageous that a 17-year-old is not given his own space.

Ilovemychocolate · 30/09/2025 14:46

Why can’t he have the Lego room?!

Spirallingdownwards · 30/09/2025 14:46

I think it's time to give up your bedroom and for DSS to have a room and you as parents to have the living room sofa-bed especially if you believe the younger children will walk in.

StewkeyBlue · 30/09/2025 14:46

If the sofa is his bed he needs privacy after designated bed time. Establish rules: e.g if it's after 10pm and the door sis shut it's his bedroom.

Had they let the door open?

Allthatshines1992 · 30/09/2025 14:46

Protosaber · 30/09/2025 14:38

Baby in with you, two other boys in bulgier bedroom, SS in small box room with a small double?

Yep. This is how it has to be. He needs his own bedroom. Can't expect a child to live on a sofa permenantly.

mrstrickland · 30/09/2025 14:46

You are being silly, of course they are going to have sex. Your DH is right its better they have sex in a safe place than outside/car etc. You need to allow them both privacy and if he doesn't have his own room, where do you expect him to have sex? Very naive of you.

MsPavlichenko · 30/09/2025 14:46

AutumnMum28 · 30/09/2025 14:31

No he doesn’t even have his own room 😩 that’s half the issue!! We’ve only got 3 bedrooms so DS1 has his little Lego shrine room, the 2 little ones (5 + baby) are crammed in the box room, and me + OH in the main. DSS has been on a sofa bed in the living room since he moved in full time last year. It’s not ideal but what can we do, can’t magic another room.

I haven’t spoken to him yet, OH just sort of shrugged and said “he’s nearly 18, leave him be” 🙄 which is easy for him to say when he wasn’t the one who walked in!! I feel so awkward I can’t even look at DSS this morning, he just sloped off to sixth form like nothing happened. Not sure if OH will actually say anything to him either tbh, he hates confrontation.

I just don’t know what the right balance is, like I get he’s nearly grown up but surely in OUR family living room when the little ones could come down any time isn’t on??

what did you think they were doing given she is staying the night? I’d have assumed they were sexually active. The room issue is problematic, so I’d have knocked before I’d gone in, and perhaps reminded them it’s a public space with the DC likely to come down early etc.

You can tell her not to stay if you want, or you can do as I suggest, and expect them to take on board what you have said.

ramonaquimby · 30/09/2025 14:46

Ong and he lives with you guys full time?
this is awful. He absolutely needs his own room. Put baby in with you, other kids share and stepson has his own bedroom. What awful parenting (from his father)

JacknDiane · 30/09/2025 14:46

So @AutumnMum28, it's obviously your kid with the lego shrine room???

WHY???

YellowMellow99 · 30/09/2025 14:46

Protosaber · 30/09/2025 14:11

Just tell them to shag in the bedroom. No shagging in shared spaces in the house.

This

Abominableday · 30/09/2025 14:47

YellowMellow99 · 30/09/2025 14:46

This

He doesn't have a bedroom, he sleeps on the sofa bed

Starlight1984 · 30/09/2025 14:48

This site makes me ashamed to be a step-parent sometimes.

This poor lad. Has to sleep on a sofa bed in the communal living room whilst all the younger kids (who don't actually really need privacy yet!) get to have their own bedroom(s).

How lovely of you.

Bringyourfoldingchair · 30/09/2025 14:48

The poor kid needs his own space. Imagine how rubbish he must feel that even the baby has their own space and he doesn't. It is the parents responsibility to provide and house their kids. Having him kip on the sofa doesn't cut the mustard. His dad is failing him. Can't believe you are letting the poor kid life like this.

Digdongdoo · 30/09/2025 14:48

Does the living room at least have a door? Ask him to close it in future.

TheatricalLife · 30/09/2025 14:48

Bumdrops · 30/09/2025 14:41

He literally has no room
not even a proper bed
this poor lad must feel completely worthless

I agree.
No space for himself, stepmum traipsing through at all hours to get washing out etc. It can't be fun can it. I know space can't magically appear, but the division of rooms here could be better. I'd feel like a real second class citizen. I know I shouldn't judge, but I can't help getting pissed off when people choose to have more kids than they can house. SS has been around 17 years, surely there was always a chance he'd need his own space?!

PastaAllaNorma · 30/09/2025 14:49

Why is he living with you and not with his mother, if he doesn't even have a room at your house?

I wouldn't let a 17yo's girlfriend stay the night anyway. But certainly not if they are in a room that's open to the rest of the household.

InMyShowgirlEra · 30/09/2025 14:49

PumpkinPieAlibi · 30/09/2025 14:36

Every day this site convinces me that I will never remarry if my husband dies. Blending does not work and it's the children who always suffer.

I'd say the vast majority of parents can count.

We have DD and SD. We can afford a 3 bedroom house. We can count to two and compare the number of children to the number of rooms and know that we now need to use contraception.

StewkeyBlue · 30/09/2025 14:49

And take a deep breath OP - you have 3 kids so you can't be having a heart attack about the fact that people develop sexual relationships - and despite the fact that you must have plenty of experience of naked bodies, they were only 'half naked'.

In your shoes rather than coming over all Shocked of Tunbridge Wells I would re-assure the poor girl that is doesn't matter, I've seen it all before.

Abominableday · 30/09/2025 14:49

JacknDiane · 30/09/2025 14:46

So @AutumnMum28, it's obviously your kid with the lego shrine room???

WHY???

I assumed this is just his bedroom. Not sure why the Lego shrine bit is in there.
17 year old probably not keen to share with a 10 year old - though a ten year old and 5 year old could share (in second largest room) and the teen could have the box room - small, but just for him. Baby in with parents.

Starlight1984 · 30/09/2025 14:50

We’ve only got 3 bedrooms so DS1 has his little Lego shrine room, the 2 little ones (5 + baby) are crammed in the box room, and me + OH in the main. DSS has been on a sofa bed in the living room since he moved in full time last year. It’s not ideal but what can we do, can’t magic another room.

What can we do?

Well, you could put the 5 and 10 year old in together, baby in with you and let the 17 year old have the small bedroom. Although I doubt you're going to do that as your DSS clearly is at the bottom of the pile in terms of who gets priority.

InTheWellBeing · 30/09/2025 14:50

She’s disgusting 🤮