15-year-old brother breaks up with his 18-year-old sister's friend after 6 weeks of dating, sister refuses to drive him to school: 'She won't speak to him at home.'

Author image for Emmy Pratt
Emmy Pratt • Writer and Editor
May 27, 2026 8:30 PM EDT

Should she have to drive him to school, even if she's angry at him?

It's a good rule of thumb to never date your sibling's best friends, especially in high school. If your brother and your best friend start dating, you will start resenting him for stealing your friend away from you, even if that's not what he's doing. It's natural to feel upset that your best friend is spending more time with her boyfriend than she's spending with you, but it doesn't mean that you're in the right. If your brother breaks up with your best friend, you're going to resent him for breaking her heart, which isn't good for your family dynamic. 

At the end of the day, you can't control other people and who they date, and the quicker you can accept that, the happier you will be. It can be frustrating to watch your friends date people who you think aren't right for them, but if you dwell on it, you're going to resent your friend and their partner even more than you already do. 

The dad in this story is in a difficult parenting situation. His son broke up with his sister's best friend over text and blocked her immediately afterward. Now, his daughter is angry at her brother and won't drive him to school anymore. Of course, the son is not wrong for breaking up with his girlfriend. After all, they were only seeing each other for six weeks. The dad told his daughter that shoe doesnt' have to drive him to school, but she needs to be kinder to her brother. Is that fair?

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  • A representation of a teenage boy who broke up with his sister's friend after only dating her for a couple of weeks.
    via Lesli Whitecotton

    A representation of a teenage boy who broke up with his sister's friend after only dating her for a couple of weeks. 

  • Am I the bad guy for telling my daughter that her brother's relationships are none of her business?

    I have an 18 year old daughter and a 15 year old son.
    via u/Calm-Will5581
  • My son had been dating 'Lisa' for about a month and a half. He broke up with her last weekend. Lisa is the younger sister of basically my daughter's closest friend.
    via u/Calm-Will5581
  • Models who represent two teenage girl best friends
    via A. C. (Unsplash+)

    Models who represent two teenage girl best friends

  • Admittedly, my son did kind of break up with her for no reason. He said because he wasn't really "feeling it." And he broke up with her over text (sent one message) and
    via u/Calm-Will5581
  • blocked her. Which is fine I suppose, but Leah has been pretty upset about it according to my daughter. Because of that, my daughter has been pretty hostile toward my
    via u/Calm-Will5581
  • son lately. She won't drive him to school or basically speak to him at home. Because she thinks he was being an ah le.
    via u/Calm-Will5581
  • Ive talked about it with the both of them: told my son that he can't be going about things like that, and my daughter that she doesn't have to drive him to school, but
    via u/Calm-Will5581
  • A picture of what could be a teenage girl driving to school without her younger brother, who doesn't have a car or a license, because he broke up with her best friend.
    via Cory Bouthillette

    A picture of what could be a teenage girl driving to school without her younger brother, who doesn't have a car or a license, because he broke up with her best friend.

  • she does have to be cordial and that she should probably keep her nose out her brothers relationships. My daugher got upset at me for what I said to her, because she
    via u/Calm-Will5581
  • thinks I'm agreeing by saying that. When in all honestly, I'm leaving this up to them to figure out. But my daughter was pretty upset with me for
    via u/Calm-Will5581
  • what I said to her, and my wife too, possibly. AITA?
    via u/Calm-Will5581
  • sky_strawberry "which is fine I suppose" in what world is that fine? teach your son to communicate properly and be a better human being, yuck
    via u/sky_strawberry
  • MonitorBrilliant 119 That's what stood out to me the most.
    via u/MonitorBrilliant119
  • PPL4Repeat Yup, 15 year old is the perfect age for teenagers to start learning empathy in order to functional adults
    via u/PPL4Repeat
  • skinnyjeansfatpants Lol, I've broken up with people in person and they said they would have preferred it over text, that I wasted their time. Breaking up s_ks and sometimes there's just no doing it right. Also, some teens primarily communicate through text, if that was the case for them, breaking up over text doesn't seem out of the norm, though it may feel in poor taste for older folks.
    via u/skinnyjeansfatpants
  • Actual-Bandicoot6947 Blocking someone who's done nothing wrong just so you don't have to confront the consequences of your actions is incredibly immature. Even if the communication is over text, people need to actually communicate.
    via u/Actual-Bandicoot6947
  • Late-Lie-3462 By the consequences of his actions...you mean the fact that he broke up with someone he was dating for 6 weeks? What "consequences" do you think he deserves? No doubt, it would make the girl feel better if she was able to yell at him or something but its not something shes "owed" or he "deserves"
    via u/Late-Lie-3462
  • WTH_JFG Of course he's immature. He's 15. This is where the 'rents make it a learning experience.
    via u/WTH_JFG
  • Actual-Bandicoot6947 Okay let me rephrase. I don't mean "consequences" as in punishment. I mean that he doesn't get to pretend she doesn't exist. She didn't do anything wrong in the relationship, he just wasn't "feeling it." Their sisters are friends and they will likely run into each other again. Blocking her to avoid a mildly uncomfortable conversation because he's a coward is not going to help him in the future and OP is doing him a disservice by acting like this is fine. If the kid is old en
    via u/Actual-Bandicoot6947
  • Traveler691 ..she should probably keep her nose out her brothers relationships. Perhaps your son should also keep his dating pool out of your daughter's friend group. That works both ways. Your daughter is allowed to be upset, particularly with how her brother broke up. Your son is allowed to break up with someone. However, it doesn't sound like you are teaching your son about manners and how to be a respectful human being. A text message and blocking is not how you should treat people. YTA
    via u/Traveler691
  • lenteleaf I'm not sure how she ever had her nose in her brothers relationships. Seems she took issue with how he acted and in response doesn't really want to socialize with him. Sounds normal to me.
    via u/lenteleaf
  • s-nicolexo This is exactly what I was thinking, it was never going to go well dating the sister of your sister's best friend. The break up over text and immediately blocking the girl is just his son avoiding accountability and completely disrespectful.
    via u/s-nicolexo

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brother teenagers friends driving parenting girlfriend dad high school sister breakup
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