So some people say that I probably should have handled the situation a little differently, but for the life of me, I can't see how I'm in the wrong here. Me and my sister aren't nearly as close as we used to be. This is because of some fucked up shit that happened a couple years ago. So I had my son Jesse at a pretty young age. Months after that, to my surprise, my ex was pregnant again. Only I knew he wasn't mine because having an infant and trying to take care of everybody left me with zero interest in sex. And we found out later on that it was my sister's fiance, ex now, that she was seen behind our backs. So to make that clear, my ex, mother of my first child, was cheating on me with my sister's ex-fiance. So she felt a particular kind of way. Worst pain ever for my son's sake, and I tried to get past it, but my sister just couldn't. And I come from a family full of half siblings too. So I really wanted my son to be close to his half brother. To no surprise though, not only were my ex and my sister's ex horrible lying cheaters, but they were also terrible parents. Both got hooked on drugs, only escalated from there. He got locked up when Keith was about three years old. This particular issue with my sister happened a couple years ago. My ex got sick. She was sick. She was scared and Keith ending up in foster care like her, and I didn't want that for him either. So I ended up legally adopting him before she passed away when he was six. Not everyone in my family was on board with it at first, but he's the kind of kid that's really not hard to love. So they warmed up to him pretty easy. My sister though never did. She hated that I brought the son of her ex-fiance into my family. And I understood it was painful, but Keith and Jessie's best interests were my main priority. Half brothers being the sole purpose of Keith being in our lives. It wasn't about her, it wasn't about me. So that's how we drifted apart. So last weekend was my birthday and I had a little barbecue in my place. Invited my parents and they've long tried to mend things between me and my sister. And they convinced me to let her come so we can chat. I thought that meant she was cool with Keith being there and knowing that obviously the three was her package deal. I asked my parents if she'd be alright with that and they said not to worry about it. Again, I took it as she came around. Because she wasn't told he would be there. How could he not? I assumed that my parents would have obviously told her the kid would be there. Nonetheless, she walks in and the first thing she says is, what is he doing here? I thought this was a family event. Loud enough, mind you, that the kid could have heard it, but lucky for me that he was playing with his brother and this didn't catch his ear. I quickly shuffled her to the side to another room and we immediately got into it. My sister was pissed because my parents told her Keith wouldn't be around and I got pissed when she didn't want him there and expected me to do something about it. So I told her to leave. She's not welcome here. There was plenty back and forth between us and the parents and I didn't want that kind of talk around my kids so I told her to just leave. I told my parents to leave also if they don't want to just drop this and move on. And till this day I'm still getting a bunch of grief. It's been about a couple weeks and my parents still think I was a little too hasty in kicking my sister out and that I should just invite her back. Am I the asshole for wanting the same life that me and my sister grew up with? Having siblings? Even if you have siblings like me and my sister are half siblings? I don't understand how I could be the asshole in all this and how she can resent a child for simply being born.