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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:
PeachyKoala · 30/09/2025 16:49

AngelicKaty · 30/09/2025 16:28

@AutumnMum28 YANBU. What does your OH's statement that "he's nearly 18" have to do with anything? Why do you think your DSS being "nearly grown up" has any bearing on this situation? Does your DSS pay rent? Pay for his food? Use of utilities, etc? Will he when he's 18 (because, you know, he'll be all "grown up" then, won't he?) How in any way does your DSS's desires trump yours in your home FFS? Your OH needs to grow a pair and tell his DS "not under our roof". When your DSS is renting his own place he can bring back whoever he likes and they can do whatever they like, but not in your home.

Why should he pay rent when he doesn't even have a room? Get real!

Bumdrops · 30/09/2025 16:50

TheatricalLife · 30/09/2025 15:23

The language is very telling isn't it? OUR family room, as if DSS isn't included in the "our". DS and his lego shrine bedroom, while DSS is on the sofa.
He's been on the sofa for a year! A whole year with no real private space at all. In that year, the OP and DSS dad could easily have had a bedroom rethink, or even at the very least invested in a temporary partition to give DSS a small portion of the living room for himself, even if he could just put it up at night with a decent airbed.
I can't imagine how shit it feels. I'd hope his dad feels crap about it, but he obviously doesn't or he wouldn't have his son in this situation.
As for him "sloping off" to college this morning-what was he supposed to do?!

Completely agree that the language through OP’s post drips with utter disregard for this young man,
im sure you walking in on them just adds to the utter worthlessness he feels in this ‘family’ set up -

EvangelicalAboutButteredToast · 30/09/2025 16:51

Goditsmemargaret · 30/09/2025 16:47

The problem is you're barging into his bedroom room and not giving him any privacy.

Calling it a bedroom room still doesn’t stop it being a communal space unless of course some sort of rota has been implemented. I could stick a tent in the kitchen and I’m still not going to stop my kids from raiding the fridge at some ridiculous time. It’s one of those pesky things that happens in living areas.

TwistedWonder · 30/09/2025 16:51

AngelicKaty · 30/09/2025 16:46

So you also didn't note that the 17yr old moved in with OP, her DH and their three children a year ago?

No that’s incorrect, I did read and note that fact. and I agree with the pp above you regarding making a change in sleeping arrangements once him moving in was agreed. Or the very least, allow him privacy in the only space he has to call his own after an agreed time - 10pm sounds reasonable

PinkyFlamingo · 30/09/2025 16:52

pizzaHeart · 30/09/2025 16:44

This ^
tell it politely and friendly, for you not for them save your battles.

The living room is his bedroom though!

MeropeRiddle · 30/09/2025 16:52

EvangelicalAboutButteredToast · 30/09/2025 16:47

Hang on hang on why don’t 17 year olds pay rent? Could it be because they are still ….. children?! 🤪🤣

No, 17-year-olds don’t pay rent because they’re dependents, not because they’re ‘children’ in the same sense as a toddler. Legally they can consent to sex, drive, work full-time, even marry with consent. They’re in that grey area: not full adults, but not kids either. Pretending they’re one or the other just creates hypocrisy. You don’t need to throw open the living room like it’s a knocking shop, but a blanket ban on teenage relationships isn’t realistic either. What they actually need is safe, discreet space and clear rules, not puritanism one minute and ‘they’re basically adults’ the next.

AngelicKaty · 30/09/2025 16:52

EvangelicalAboutButteredToast · 30/09/2025 16:47

Hang on hang on why don’t 17 year olds pay rent? Could it be because they are still ….. children?! 🤪🤣

Yup, I agree, some of the logic on here is weird. One minute DSS is "almost grown up" so of course he can enjoy a sex life in his own home (that he only arrived in a year ago when OP and her family were already at full capacity), but also of course he doesn't have to pay for anything because he's a child. His age is irrelevant (apart from them being over the age of consent thank goodness), it's simply that his desires should not trump OP's when she's the joint home-owner!

Bumdrops · 30/09/2025 16:53

AngelicKaty · 30/09/2025 16:44

No, OP and her OH have three kids in a 3-bed house. Her OH's eldest son only moved in with them a year ago, so they've accommodated him the best they can without disturbing the existing sleeping arrangements of their own family. What we don't know is why an older teenager has moved in with them and why he isn't still living with his mother (or wherever he was living before moving in with OP and her OH)?

Exactly, there must be quite a strong push factor from whatever circumstances he was living in before because I can’t imagine why any teen would opt to live this way if there was any alternative- very sad

whatasillygoose · 30/09/2025 16:53

AngelicKaty · 30/09/2025 16:46

So you also didn't note that the 17yr old moved in with OP, her DH and their three children a year ago?

And why did a child of the family not have their own space before that?

Lavender14 · 30/09/2025 16:53

EvangelicalAboutButteredToast · 30/09/2025 16:47

Hang on hang on why don’t 17 year olds pay rent? Could it be because they are still ….. children?! 🤪🤣

They are children but at 17 they are allowed to drive, they are allowed to marry with parental consent, they are allowed to give blood, fly a plane, undertake medical treatment without informing parents, leave home and live independently (paying rent), vote and have sex.

There's a wide spectrum to childhood and ops dss is on the upper end of that spectrum so shouldn't be treated like a young child.

InMyShowgirlEra · 30/09/2025 16:53

Lavender14 · 30/09/2025 16:33

What I said, because you seem to have missed it, was :

"in a presumably safe, healthy and consensual intimate relationship with contraception is disgraceful and very damaging. "

Presumably. Because I'm aware that's an an assumption which is also why I said that it will be important that ops dh has a non-shaming conversation with his ds about these issues to CHECK he's being safe and respectful.

"They are having sex in the family living room where anyone can, and did walk in"

This is his bedroom and the only place of privacy he has in the entire house bar the toilet and I wouldn't be suggesting he takes it to there.

"There is absolutely nothing wrong with parents not wanting their children to engage in sexual activity in their home"

Which again, is why I said its understandable op might feel uncomfortable, however sex is a part of bodily autonomy and op is not responsible for dictating this for her step son, especially when his parent has said he'd prefer his son is practicing safe sex at home with clearer boundaries.

"Just because you have a laissez-faire attitude to sex and young people doesn't mean to say everyone feels the same."

I didn't say I expected everyone to feel the same as me, I do think op handled this badly and passive aggressively, and is ignoring and not speaking to either young person which is the key issue here. That behaviour is not appropriate or acceptable from his stepparent.

I don't disagree but I would suggest that OP finds someone else to educate this young man about safe sex and contraception as clearly it's not something she and DP have mastered yet.

TwistedWonder · 30/09/2025 16:53

Bumdrops · 30/09/2025 16:50

Completely agree that the language through OP’s post drips with utter disregard for this young man,
im sure you walking in on them just adds to the utter worthlessness he feels in this ‘family’ set up -

Agree. The contempt she feels for the boy dating to exist oozes out of her posts.

EvangelicalAboutButteredToast · 30/09/2025 16:53

tiredangry · 30/09/2025 16:44

I’ve reported this thread. OP drip fed that this 17yo has no bedroom.

I have to ask why that’s deserved of a report? What rule has this contravened?

walkawayytime · 30/09/2025 16:53

pizzaHeart · 30/09/2025 16:44

This ^
tell it politely and friendly, for you not for them save your battles.

How do you propose that happens when the poor lad doesn't have any kind of bedroom

MidgesonMull · 30/09/2025 16:54

AngelicKaty · 30/09/2025 16:46

So you also didn't note that the 17yr old moved in with OP, her DH and their three children a year ago?

her DH is his father, ffs!
The lad has every right to expect that his own parent might accommodate him. It's not his fault that his parents split up. What a horribly disrupted life he has.

Rosscameasdoody · 30/09/2025 16:55

grapesstrawberriespleass · 30/09/2025 16:31

Your 1 year old son has an entire spare bedroom dedicated to his Lego? While your stepson sleeps on the sofa? Are you genuinely being serious?

No. DC1 aged ten has his own room - Lego themed. The 5 year old and the baby are in the other bedroom and OP/DH have their room.

MeropeRiddle · 30/09/2025 16:56

EvangelicalAboutButteredToast · 30/09/2025 16:51

Calling it a bedroom room still doesn’t stop it being a communal space unless of course some sort of rota has been implemented. I could stick a tent in the kitchen and I’m still not going to stop my kids from raiding the fridge at some ridiculous time. It’s one of those pesky things that happens in living areas.

And you can call it a ‘communal space’ all you like, but if you put a teenager in there to sleep for a year, you’ve made it his bedroom. If you wander into someone’s bedroom late at night, there’s always a risk of seeing something you don’t want to. That’s not him being inappropriate — that’s the reality of giving him no private room of his own

EvangelicalAboutButteredToast · 30/09/2025 16:56

Lavender14 · 30/09/2025 16:53

They are children but at 17 they are allowed to drive, they are allowed to marry with parental consent, they are allowed to give blood, fly a plane, undertake medical treatment without informing parents, leave home and live independently (paying rent), vote and have sex.

There's a wide spectrum to childhood and ops dss is on the upper end of that spectrum so shouldn't be treated like a young child.

So we have to decide if this is a child or an adult. My feeling is it’s one of those manchildren who wants to do the sex stuff without the responsible stuff. So shag in a communal space while there are young kids about but not bother picking up his dirty pants and clearing away the plates from the snack he had. That’s the person I’m envisaging.

AngelicKaty · 30/09/2025 16:57

PeachyKoala · 30/09/2025 16:49

Why should he pay rent when he doesn't even have a room? Get real!

Well done for taking that out of the context of my entire comment. The point is this is OP's joint home that she pays towards - he doesn't. How anyone can think that his desires should take precedence over the homeowner's is astonishing.

WatchingTheDetective · 30/09/2025 16:58

EvangelicalAboutButteredToast · 30/09/2025 16:56

So we have to decide if this is a child or an adult. My feeling is it’s one of those manchildren who wants to do the sex stuff without the responsible stuff. So shag in a communal space while there are young kids about but not bother picking up his dirty pants and clearing away the plates from the snack he had. That’s the person I’m envisaging.

He's 17, ffs.

EvangelicalAboutButteredToast · 30/09/2025 16:58

MeropeRiddle · 30/09/2025 16:56

And you can call it a ‘communal space’ all you like, but if you put a teenager in there to sleep for a year, you’ve made it his bedroom. If you wander into someone’s bedroom late at night, there’s always a risk of seeing something you don’t want to. That’s not him being inappropriate — that’s the reality of giving him no private room of his own

Of course it’s him being inappropriate. Social decency tells you that shagging your girlfriend in the living room when there are little kids in the house is deeply unpleasant. That shouldn’t need spelling out.

EvangelicalAboutButteredToast · 30/09/2025 16:58

WatchingTheDetective · 30/09/2025 16:58

He's 17, ffs.

Child or adult? Quick decide.

TwistedWonder · 30/09/2025 16:58

MeropeRiddle · 30/09/2025 16:56

And you can call it a ‘communal space’ all you like, but if you put a teenager in there to sleep for a year, you’ve made it his bedroom. If you wander into someone’s bedroom late at night, there’s always a risk of seeing something you don’t want to. That’s not him being inappropriate — that’s the reality of giving him no private room of his own

Completely agree. The boy has absolutely no privacy whatsoever whereas his significantly younger siblings all have their own rooms. Other than when he’s in the bathroom, when is he afforded the respect of his own space?

Rosscameasdoody · 30/09/2025 16:59

whatasillygoose · 30/09/2025 16:53

And why did a child of the family not have their own space before that?

You’d have to ask OP that. There may be a very good reason. He may have been full time with mum for some reason. Not everyone can just up and move, and not everything is sinister. Some things are just circumstance.

WaltzingWaters · 30/09/2025 17:00

You were bang out of order cutting through his “bedroom” at night. Give the lad some privacy (that goes whether he has his GF over or not - it should be completely his space between certain times).
But yes, you need to rearrange the living arrangements. Baby shares with you. Middle two share the bigger room. dSS in box room.
But you need to loosen up. He’s 17 and in a relationship, and your house is his house. The lounge IS his bedroom. Of course he’s going to be having sex there. As long as he’s respectful with when he does - which he was, chill out.

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