Am I a bad sister for “taking her man”?

A 19-year-old big sister, super close with her four younger siblings, starts dating a guy from the neighborhood she recently noticed in a whole new light. Things move fast—they go on dates, make it official, and she decides it’s time to introduce him to the family over dinner and movies. That night, her 17-year-old sister (the one she’s closest to, thanks to their small age gap) acts strangely quiet and off.

No big deal at first, but once he leaves, the younger sister unleashes: accusing her of stealing “her man” and being a fake sister. It escalates quickly to yelling and even getting in each other’s faces, needing family to step in. The drama hooks you because sibling bonds are supposed to be unbreakable, yet a teenage crush turns everything upside down. Social media users piled on with advice, from calling out entitlement to suggesting therapy, while a later update shows time healed it all—with laughs and maturity on the other side.

Am I a bad sister for “taking her man”?

The oldest sister explains her close family and her younger sister’s constant boy talk.

So I’m 19 (just turned a few weeks ago) and the oldest of 4 sisters (17,12,7,3months) and I have a really good relationship with each one,

but I’m more closer to my 17 year old sister since we are closer in age. Now this sister of mine is BOYCRAZY and I say it out of love...

She describes meeting and dating the guy without telling family at first.

But anyways when I say she’s boycrazy I mean she always tells me about her hallway crushes, her class crushes, her cafeteria crushes, her bus crushes, her work crushes, ALL...

But anyways I recently started seeing this guy that lives in our neighborhood and who I also graduated with, it was one of those cases where you don’t typically notice...

and then BAM suddenly you really take a good look at them and they’re All you think about. Anyways we started talking and going on a few dates and then...

(Keep in mind I never told my family that I was seeing someone because I didn’t want it to blow up in my face just to tell them that it...

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I figured it was time to introduce him after it was all said and done that I was his girlfriend now, so I bring him over to my house and...

We had dinner a majority of the night and watched movies, but throughout I noticed my sister was acting odd but I didn’t think it was that big of a...

The confrontation hits hard right after.

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The night ends and he leaves, we start cleaning up and then my sister approaches me and starts talking to me like she has no sense, her tone is defensive...

All she started saying was how “I stole her man” and was “a fake sister”. I honestly was so confused cause what was she even going on about?

But eventually I start putting the pieces together and I make it clear to her that he’s MY man and not hers, she replies by saying how she had told...

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(which to be fair I lowkey think she did, but there’s multiple good looking guys in our neighborhood, and plus she never pinned a name to him or even a...

But BLAH BLAH BLAH, she’s yelling more and more and at some point she even came chest to chest with me.

Our 12 year old sister and mom had to pull her away from me but She went upstairs and made sure to slam it and she hasn’t come out of...

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A short update on the immediate aftermath.

Update 12/27/23: Okay, so update, yesterday she was ignoring me which was like “okay fine”, so I wasn’t able to ask her the questions you guys suggested.

I ended up telling my mom about the WHOLE thing and she had the same reaction as you guys: weirded out.

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She said she would talk to her for me and so present time I don’t know if she has had the time to yet. I tried texting my sister to...

but she’s been leaving me on read and ignoring me around the house. I’m still gonna try and give her some time to relax a bit so we can talk...

The happy long-term resolution.

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UPDATE 5/9/25: WOWWW it’s been a year now and I’ve completely forgotten I even made a post lol. Anyways update on everything—me and my bf broke up literally 4 months...

Me and my sister are good now and we look back at the situation and just laughhhhh, she’s now in college and she’s matured a lot.

I’m currently at UH for dentistry and in a new relationship and it’s going really good and I honestly see a future with this guy.

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Anyways After the situation she did apologize (mainly bc she realized giving me the silent treatment meant she wouldn’t be able to ask me to buy her food lol)

once again water under the bridge. I hope everyone is doing good and I thank all of you for being on my side all this time

This clash shines a light on classic teenage emotions clashing with reality—no one can “claim” a person just because they have a crush. The older sister did nothing wrong by pursuing someone who chose her back, especially since the crush was vague and one-sided.

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Psychologist Robert L. Leahy, author of The Jealousy Cure, points out that jealousy often stems from deep fears of lacking something others have, like attention or connections—common in teens navigating identity and relationships.

At the same time, the younger sister’s intense reaction, fueled by her many crushes, suggests a bit of “main character syndrome,” where everything feels personal. Parents stepping in, like involving mom, helps validate feelings without excusing over-the-top behavior.

Good moves include giving space to cool off, then chatting calmly about boundaries—crushes are fun, but people choose their partners freely. With time and growth, as the update shows, these blowups often turn into funny stories, strengthening the bond long-term.

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Let’s dive into the reactions from Reddit:

Most users agreed she did nothing wrong, stressing that crushes don’t equal ownership.

Silvermorney − Not wrong at all. Even if she did have a crush on him that does not entitle her to dibs on him. He is a human being not...

and clearly he chose the woman his own age that he actually has a connection with and not her younger sister who presumably he has never even spoken too and...

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I agree with the other commenter she likely needs therapy as this seems less like a crush and honestly more like an obsession. Good luck op.

Dear_Parsnip_6802 − You don't put dibs on people lol. You did nothing wrong.

Disastrous_Ad_8561 − You should talk to your parents about getting her into therapy.

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[Reddit User] − Your sister needs therapy, you aren't a bad person, and your sister can't just claim a guy just because she's obsessed with boys. Your sister needs therapy...

bmyst70 − You did nothing wrong. People aren't trees, and we aren't dogs. Your sister didn't pee on him to mark him as hers, did she? If she did, please...

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She never dated him, he was one of her many crushes. And she needs professional help if she's going to blame you for dating one of her many crushes.

Some focused on entitlement or needing a reality check.

StarlightM4 − You are not wrong. It sounds like she has issues, also a big dose of main character syndrome. She likes to ogle and fantasise about lots of boys,

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but they are all hers. She would probably react the same if one of her friends started dating a boy she saw on the bus once.

I would keep her away from any boy you see, though, as much as possible. And warn them about her.

MoomahTheQueen − I don’t think your sister needs therapy. She just needs to grow up and realise that people don’t “belong” to her just because she’s noticed their existence. Let’s...

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useless_99 − Your sister needs legitimate professional help or she’s never gonna have a man period, because as the saying goes, ‘never stick your d*ck in crazy. ’ And boy...

Serious_Watercress38 − Not wrong. Your sister is delusional if she thinks of people as something you can “claim”. Even if you weren’t dating the guy nothing guarantees he would even...

Others kept it realistic about teen drama passing.

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hippywitch − Had she ever talked to him before? If the answer is no then she’s an i__ot.

SnooWords4839 − Sister needs a reality check. You didn't steal anyone.

Ryuugan80 − So. .. your sister is a little dumb. Like, if you could write down a list of ALL the people she's said she has a crush on (even...

hand them to her and ask her to cross off the people she's no longer interested in. She can be "in love" with maybe one or two people, not twenty.

[Reddit User] − You didn't do anything wrong, but honestly this is so high school. It's not going to matter either way because you are both extremely young and will...

Objective-Move-7543 − She will get over it when she gets her own boyfriend

pauleide − She will forget all about this boy when she finds a boyfriend of her own. I would be a little worried your sister tries something overtly s__ual with...

I don't know your sister at all but I was 17 year old boy at one time and 17 year olds make bad decisions.

Looking back, this was a heated moment driven by teenage feelings, but no real harm done—the sisters patched things up, laughed about it later, and moved on with their lives. Crushes come and go, and true family sticks around. Have you ever dealt with sibling drama over a crush? Would you have handled it differently? Drop your thoughts below!

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