Our family’s big secret wasn’t just hers—it was ours too

r/

Last year, my sisters and I were completely blindsided by something we never saw coming. We took a DNA test just for fun, and it revealed that one of us had a different biological father. We had no idea. There had never been a single reason to believe we weren’t full siblings.

We wanted to ask our parents, but the sister affected didn’t want us to. We respected that she wasn’t ready. We wanted her to feel safe, so we let her go at her own pace. And we’ve respected that decision for over a year.

Then yesterday, everything shifted again. A cousin called, and during some small talk, something I said must have triggered a memory for her. She asked if I knew the big family secret. I told her maybe, obviously not knowing what she was about to say. She said it was about my family. I asked her to elaborate, and she said it was about my sister. At that point, I had a strong feeling I knew what she was going to say, but I made her say it anyway. She knew my sister had a different father. She told me what little she knew, which she apparently found out as a teenager. I don’t know if all the cousins know—but some of them obviously do.

And the worst part? The extended family has known this entire time. Aunts, uncles, cousins, grandparents—everyone except the five of us sisters, who actually lived in that house. According to what we’ve learned, our mom had an affair with a coworker. Our dad caught them, and that’s how our sister was conceived.

I’m the oldest. When my sister was born, the mom role wasn’t something I stepped into—it was thrown on me. I was 6 or 7. I changed diapers, did feedings, calmed crying, and learned how to keep things running in a home that felt heavier than it should have for kids. I primarily raised this sister, but I was a mother figure to all of them in a big way. This one just felt a little different.

My mom started to slowly check out of being a parent, and my dad… let’s just say the atmosphere in our house made it very clear we were on our own. I had to miss out on milestones like going to my freshman homecoming and hanging out with friends or going on trips because I had to babysit my sisters. It got to the point that my parents would sneak away without telling me, just so I couldn’t protest. I would just be stuck.

Looking back, I didn’t just lose my childhood. I was robbed of it.

And all this time, I thought we were all in it together. Turns out, everyone else was watching from the outside, knowing things we didn’t.

The sister at the center of this has made it very clear she doesn’t want to confront our parents. She says it’s her story and her trauma, and we should respect that. And we have, it’s been over a year now. But now that we know how deep the secrecy goes, it doesn’t feel like just her story anymore. It’s ours too.

We were lied to. We were raised in the aftermath of something we weren’t allowed to understand. And we’re still being told to keep quiet.

I want to ask my parents for the truth. Not to start a fight. Just to finally understand what really happened. But I know she’ll be furious. Maybe my other sisters will side with her. But I can’t keep pretending this didn’t happen.

I just don’t see how there can be any healing for anyone without this being talked about.

Would you speak up? Or would you keep the silence for someone who refuses to talk about it?