AITA for not wanting to be around my GF’s little sister and causing a rift in the family?

From the innocence of childhood friendships to the tangled emotions of adolescence, this story unfolds with a quiet intensity. What began as playful teasing over a childhood crush has grown into a complex web of feelings, blurring the lines between affection and discomfort. The narrator finds himself caught between loyalty, nostalgia, and the awkward realities of growing up.

As the years pass, the once-innocent glances and shy smiles evolve into a persistent presence that challenges boundaries and stirs unease. The tension builds quietly but unmistakably, revealing the fragile balance between love, jealousy, and the painful confusion of youthful hearts in transition.

AITA for not wanting to be around my GF’s little sister and causing a rift in the family?

I met my girlfriend when we were 11. We were on the same basketball team so I met her family at the games. Her sister “Sammi” was 8 back then and I guess her family used to like teasing that she has a little crush on me and she’d get all shy whenever I hung out with them.

They made jokes about me being her “little boyfriend.”

Then we got together when we were 13. So the whole Sammi crushing on me got more obvious. Everyone in her family says it’s cute. Sometimes Sammi would come with us to the movies and I’d buy them stuff.

Whenever I go with her family anywhere Sammi always wants to sit nxt to me or on my lap. Never said anything back then since she was a little kid and didn’t mean anything.

Now she 15 and feel like the crush has got worse. To a point where it is awkward and uncomfortable for me. She doesn’t hide that she gets jealous of my GF or when I’m at their place she’s like glued to me, gets mad if we wanna be alone in my GF’s room, wants to go with us wherever we go.

Everyone always treated it like Sammi being herself. But now it makes me super uncomfortable her wanting to be all over me sometimes and I purposely sit somewhere she won’t have space to be near me.

We just learned recently that my girlfriend is pregnant and we moved into our own place to get ready for our baby.

Sammi straight up lost it when we told our families we’re pregnant. I’m serious she locked herself in the bathroom crying for an hour yelling that she hates everyone. So yeah with her reaction I wannabe around her even less.

I told my GF how I’ve been feeling uncomfortable with her sister for so long time and I should’ve said all this sooner.

My girl apologized because she always thought I was ok with some of the shit her sister does but says I don’t have to interact with her if I don’t want to.

She also talked to her family about getting Sammi to start respecting my boundaries and let it go with the boyfriend jokes already. They don’t think Sammi is doing anything wrong since the crush is innocent so they pretty much don’t wanna tell her keep some distance from me when we come over.

Her parents started coming at me to stop making a big deal and punishing Sammi for how she feels.

I showed my GF the txts they sent me and she got pissed. So now she won’t go either until they start getting her Sammi to behave right around me but they won’t do that. The whole family is attacking us especially my girlfriend and it’s making me feel guilty.

They’re saying I’m terrible for ruining things between my GF and them. They don’t get why I’m being this way. My girlfriend is so mad she don’t wanna talk to them, they’re saying it’s my fault.

AITA for starting this whole thing by not wanting to be around Sammi anymore?

Here’s how people reacted:

NHFNCFRE

If the gender roles were reversed here (boy crushing on girl in weird, obsessive ways) I suspect we’d all be telling the girl to stay the hell away and sending therapy contact informtion. This shouldn’t be any different–a pregnancy announcement sent this stalker-child into an hours long fit and “hating everyone.”

This never should have been allowed to get started…even an 8 year old is able to understand that you were GF’s friend, not hers, and the parents encouraging it because “it’s cute” is so, so wrong. A 10yo sitting in your lap and forcing physical contact is unacceptable. A 15yo who is now living in some fantasy world of being with you (still being encouraged by her parents) has reached stalker levels. IF there is some mental challenge that makes it that much harder for her to separate boundaries, it’s even worse. “Just” being herself is not excuse for the kinds of behavior described here, and any parents or relatives who are both allowing and excusing it are just making the problem worse. It \*is\* a big deal. A boy forcing himself on a girl the way she’s forcing herself on you could mean police charges. How do people not get that?

Cut contact from the family and stay away until sister has had the chance to hopefully get the help she needs. Once your GF has the baby, they’re going to come out of the woodwork to get you to overlook little sis’ behaviors and “forgive,” even if nothing has changed. You are allowed to say “no,” and full props to GF for supporting you and not making excuses herself.

FinanceRemarkable881

NTA. As bad as this sounds, I’d also be wary of her down the road and look out for signs of her trying to push you and your girl apart when Sammi’s 18+. Hopefully this crush will have blown over by then but this happened to a friend of mine and his girls younger sister tried to seduce him when she became of age, he obviously rejected it and he and his wife cut contact completely, but it caused all sorts of issues with the younger sister telling lies (that were refuted by my friend with clear evidence such as the sister saying they had slept together on certain days when there was proof he was with his wife/out of town/out of state, etc) just a warning to be careful as pessimistic as it sounds.

sagekoneko

NTA. You are not obligated to be uncomfortable for “sammi”. No means no, and everyone has to accept it. There are a lot of things we let kids do that we don’t let teens do. The people who get upset when you establish a boundary are the people who ever over stepping it. Let them be upset, of course they don’t want to see “sammi” have her first heart break. Deal with it now, because it will only get worse if you allow “sammi” to behave in ways you don’t like. She is not going to die because she can’t marry her crush. Life is full of consequences, and the consequence of “sammi” not respecting your boundaries is you won’t be coming around.

SambaViking

Also did y’all see that part about her wanting to sit on his lap?? Sami was 13 when she was doing that. Middle school. A 13 year old wanting/trying to sit on a 16 year olds lap is creepy, unhealthy, and not normal. I’m shocked that her parents allowed this. Also, the whole “Sami’s little boyfriend” thing? Also incredibly unhealthy and not normal considering he’s actually dating her older sister. Congratulations on the pregnancy though, hope all goes well!!
I may however be cautious about letting Sami around your new baby when it comes. I’d be worried that she would take her jealousy out on your little one.

IllustriousAuditVamp

Are your girlfriends parents really blind to the fact that Sammi isn’t a 8yo with a crush on an 11yo anymore but is now a 15 year old MINOR going after (obsessively) that same person who is now a legal adult with consequences HE would face if SHE doesn’t stop. What if sammi gets upset again and decides to lie for revenge/ to break you guys up? Gets jealous of your baby and no one is looking? Do you really think you should feel guilty for not wanting anything to do with the total risk that having sammi in your life is?

RollingKatamari

NTA-please go very low contact with her family until the baby is born. This should be a special time for you both and your gf really doesn’t need the added pressure during her pregnancy. I hope you two don’t live with them? If you do, move out asap. Sammi’s crush may have started out innocently, but it shouldn’t have been allowed to go into this very unhealthy phase, Sammi is a teenager bursting with hormones and crazy thoughts. I really hope she doesn’t hurt herself over this.

TrickInteresting8032

NTA. You guys have only 3 year age gap. It’s really weird.

Why are her family members acting like she is some 9/10 year old who likes to spend time with her sister’s 25 year old boyfriend?

Looks like they haven’t stopped babying her and let’s not forget her behaviour is mostly their fault. Their teasing only encouraged her and if you want it to stop, you need to enforce boundary. It is worrying how she will treat your child in future if her obsession doesn’t end. Edit:typo

Professional_Duck564

Crush innocent when she responds with a crying fit when you announce the pregnancy ? (congrats btw)

Seriously, that is NOT healthy – and the clingy behavior confirms this.
It MAY have been innocent at 8 years old – but really it isn\`t.

Given that it\`s family – keeping her away will probably not work – but if she is in the same general area – keep your distance, do not encourage this and be firm but friendly.

NTA

pixie0847

INFO I get a kid taking a shine to someone who’s a bit older, but this has gone way too far. Has Sammi ever verbalise her crush on you, or could it be an attention thing? Has anyone asked why she had such an extreme reaction to the pregnancy? I get the feeling that it’s less about you (although I agree with boundaries) and more about her being babied by her family and doesn’t want the attention taken away from her?

JustARedditUser357

NTA and it’s kinda creepy that they’re egging it on imo. You should also let your girlfriend know that she doesn’t owe anyone her time. Not even family. Her parent’s actions and her sister’s actions are the cause for the “rift” after you have made it clear that it makes you uncomfortable and they’ve done nothing about it.

ShinyArtist

NTA. That’s not an innocent crush, that’s unhealthy obsession, especially if she crying for hours because you’re starting a family with someone else and she can’t move on. Sounds like the parents are in denial at how bad it is.

I’d even be scared leaving your child alone with her in case she see the child as an obstacle.

MilfyMacgyver

NTA. In the first place, they should have respect your privacy because you were uncomfortable and things are getting out of hand. I don’t think it’s normal to hang around with someone who has a girlfriend already. And it’s really awkward that it has to be your GF’s sister who makes u feel uncomfy in their family.

Heartsuk

NTA you are not the issue the family and Sammi are, though you should have spoken up sooner. The nice thing is you have your own space and if her family keep up the abuse go no contact for a while till they behave and appologise

Just support your GF and good luck with the new little one.

patrineptn

She should have grown up from this crush a long time ago. She’s 15 and her family is still treating her as if she’s a little kid.

NTA. You’re making yourself and your girlfriend a favor

Also, congratulations on the baby!

Aromatic-Ice-968

Anyone else guessing that Sammi’s favourite Bible story is the one of Jacob/Rachel/Leah? Seriously, OP, stay far away from that girl. She sounds like the sort who would get you drunk and try get herself pregnant to you.

chirplet

NTA. They let this inappropriate behavior go on WAY too long and encouraged it by not doing anything and repeatedly saying you were Sammi’s boyfriend. WTF. Family and Sammi are very in the wrong here.

Rtonin88

YTA She’s a kid with a harmless crush, you should be flattered rather than trying to shame her for it and making a big deal and complaining about nothing.

Conclusion

The original poster (OP) is facing significant discomfort and boundary violations due to the persistent and intense fixation of his girlfriend’s younger sister, Sammi. While the OP initially tolerated the situation, her escalating behavior, especially after the pregnancy announcement, led him to establish firm boundaries. This action has created a major conflict with Sammi’s parents, who refuse to enforce distance and instead blame the OP for disrupting family dynamics and causing distress to both his girlfriend and Sammi.

Is the OP at fault for finally asserting his personal boundaries regarding his girlfriend’s sister, even though doing so caused significant family backlash and strained his girlfriend’s relationship with her parents, or was protecting his mental comfort and his relationship the necessary course of action?