So, I (28F) have always had a rocky relationship with my sister (30F). She’s always been the golden child. The one who got praised for everything, even when she messed up. Meanwhile, I was constantly compared to her and never quite measured up in my parents' eyes.

Growing up, she was always in relationships—constantly jumping from one guy to the next. And she cheated in almost every single one of them. She even went behind my back in college and hooked up with a guy I was seeing at the time. She said it was "just a fling" and that I was being dramatic for caring. That was the final straw in our relationship, and while we’ve been civil since then, we’ve never really been close.

Fast forward to last year, she got married to this guy—let’s call him Ryan. Ryan was charming, successful, and looked like someone who walked out of a fitness magazine. My family loved him, and of course, she flaunted him like a trophy.

Last month, she found out Ryan had been cheating on her—with multiple women. She was devastated, crying her eyes out, and came to our parents' house where I happened to be visiting. She was sobbing, saying she didn’t know what she did to deserve this.

I stayed quiet at first, but then she turned to me and said, “You’ve been quiet. Don’t you have anything to say?”

So I said, “You had this coming. You’ve cheated on every guy you’ve ever dated. You stole one from me. You think the rules don’t apply to you. Maybe now you understand how it feels.”

She burst into tears again, and my mom immediately told me I was being cruel. My dad said I should apologize. But I didn’t.

Now my whole family is acting like I kicked her while she was down. I don’t feel bad for what I said. I think she needed to hear it.

So… AITA?