Sisterly feud ignites when 35-year-old man flirts with his fianceé's older sister at their engagement party, wedding gets put on hold: "If things were different, I'd be with someone like you"

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Ely Bulnes • Writer and Editor
Jul 7, 2025 5:00 PM EDT

The bond between two sisters is supposed to be the absolute pinnacle of female relationships. Best girl friends who are not related but that share a close and unbreakable bond are often described as being "like sisters." So, what could possible drive two sisters to break that bond? Well, honestly, a lot of things. Just because you share parents doesn't guarantee that you share values, goals, or even love for one another. The sad truth is that family is just as likely to take advantage of you, ignore you, or hurt you as anyone else.

Today, we examine a tale between two sisters. The younger believes that the older one has it out for her; she believes her to be jealous and conniving. The younger's suspicions are confirmed when her sister tells her that her soon-to-be husband was flirting with her at the engagement party – all of this just to cause drama! Well, that's just the younger one's perspective. Scroll down to read the older sister's POV. 

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  • 01

    AITAH for telling my younger sister her fiancé hit on me the night of their engagement party

    Cheezburger Image 10525319168
    via KatarzynaBialasiewicz from Getty Images

    This image is for illustration only, and the subjects are models; the image does not depict the actual subjects of the story.

  • 02
    My sister is 21 and just got engaged to a 35 year old man named Derek. The age gap already made me uncomfortable but she kept saying he was mature and different. I'm 24.
    via u/Familiar_Edge9487
  • 03
    At their engagement party, everyone was drinking and Derek kept offering to top up my wine. At first I thought he was just being polite, but then he started
    via u/Familiar_Edge9487
  • 04
    getting weird. He stood too close, touched my back a few times, and eventually said something like "if things were different, I'd be with someone like you."
    via u/Familiar_Edge9487
  • 05
    Cheezburger Image 10525319680
    via Gary Barnes from Pexels

    This image is for illustration only, and the subjects are models; the image does not depict the actual subjects of the story.

  • 06
    I laughed awkwardly but he didn't stop. He asked if I really supported their marriage and said I seemed more "on his level." I felt gross and left early.
    via u/Familiar_Edge9487
  • 07
    I told my sister what happened that night. She completely flipped out on me, said I was jealous and trying to ruin her life. My mom believes me. My dad
    via u/Familiar_Edge9487
  • 08
    says maybe I misinterpreted it. Now the wedding is on hold and most of the family is upset with me for causing drama. I'm starting to regret saying anything but I also feel like I had to. AITAH?
    via u/Familiar_Edge9487

  • Dad is just as big of a red flag as our protagonist's sister's soon-to-be husband.

  • 09
    Cheezburger Image 10525319424
    via SHVETS production from Pexels

    This image is for illustration only, and the subjects are models; the image does not depict the actual subjects of the story.

  • 10
    LadyFoxfire NTA. She deserved to know the truth, even if it hurt.
    via u/LadyFoxfire
  • 11
    Gomezamic NTA, you're telling the truth out of love and care for her not to ruin her life. He's the one who crossed the line, and he did it at his own engagement party with his future sister-in-law. It's
    via u/Gomezamic
  • 12
    clear that age doesn't define maturity-he's a manipulator. Your sister may be blinded by love right now, but sooner or later she'll realize the kind of person she's really with. You did the right thing.
    via u/Gomezamic

  • No doubt her sister will thank her in the years to come. Until then, this relationship might be a little rocky. 

  • 13
    Familiar_Edge9487 OP Exactly. I didn't say anything to be cruel. I would've hated myself if I stayed quiet and she found out later, after a wedding or worse. He made the mess, not me.
    via u/Familiar_Edge9487
  • 14
    NiyaQueeen Exactly. It would've been so much worse to stay silent and watch her marry someone like that. Sometimes the truth hurts, but hiding it would've been the real betrayal.
    via u/NiyaQueeen
  • 15
    Valuable_Doubt_2098 Nta. You did the right thing. You would have felt worse if you said nothing then watched as he screwed her over. You told her the truth and now it's solely her responsibility what she decides to do wit
    via u/Valuable_Doubt_2098
  • 16
    Familiar_Edge9487 OP That's what I keep reminding myself. I gave her the info, what she does next is on her. I wasn't about to sit there and pretend everything was fine.
    via u/Familiar_Edge9487
  • 17
    NiyaQueeen Totally agree. Keeping quiet would've just made her feel more betrayed later. OP did her part what happens next is on the sister, not her.
    via u/NiyaQueeen
  • 18
    Cheezburger Image 10525319936
    via Cristina Munguia from Getty Images

    This image is for illustration only, and the subjects are models; the image does not depict the actual subjects of the story.

  • 19
    Civil Environment858 NTA but your sister is obviously young and insecure. I'm sorry this is happening and that doing the right thing is so hard. Your dad is being as much aj Derek. Let me guess, your sister is daddy's girl? as
    via u/Civil_Environment858
  • 20
    Familiar_Edge9487 OP Bingo. She's always been the golden child and he defends her no matter what. It's exhausting. I knew this would blow up but I didn't expect everyone to turn on me like this.
    via u/Familiar_Edge9487
  • 21
    TheLastWord63 NTA. What did he say when he was confronted about it? By the way, I would question my dad about his reaction to you.
    via u/TheLastWord63
  • 22
    Familiar_Edge9487 OP When I confronted him, he just brushed it off and said I was making things up or reading too much into it. The way my dad sided with Derek without hearing me out has honestly been the hardest part. It makes me question a lot about where I stand in the family.
    via u/Familiar_Edge9487
  • 23
    Em4Tango Have you considered telling him to his face that he's a terrible father to both his daughters?
    via u/Em4Tango
  • 24
    Anointed Queen NTA. Unfortunately, 90% of the time, you are painted as an evil one. So far, every time I exposed the bf or the husband or the fiancée, I always ended up losing my friend over it. And, the only thing that they can come up with is that the reason I said that I was
    via u/AnointedQueen
  • 25
    being hitting on by their SO because I'm jealous LOL. Pleeeeeaaaaasssseeeeee. Funny enough most of these relationships didn't survive bc of cheating, and I think I only had one ex friend circle back to me years later to apologize.
    via u/AnointedQueen
  • 26
    Lumiveyy Right it's wild how often the truth-teller gets punished you were looking out for them and they chose denial. Sad but so common.
    via u/Lumiveyy

Tags

relationship advice family drama flirting sibling rivalry sisters siblings relationships parenting couples family sister engagement little sister red flag relationship drama
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