AITA for telling my ex that if she breaks into his house to see her kids she won't have anyone left to represent her in court?

My ex and I were together from college, which was about 10 years ago. I met someone else and moved away. We didn't end up together, I moved back home and married my partner instead. <br><br>I have two sons and my ex has three daughters. They absolutely hate each other. It's not that they don't like my ex's kids, they just don't want them around. I know that part of it is that my kids have severe allergies and one of my ex's kids has made them very sick before. <br><br>My ex and I aren't close, and we have a bit of a history with each other. We broke up and then went back to trying to work things out for a while before finally splitting for good. <br><br>My partner and I have been together for a few years now. We have two boys and we were expecting our daughter. <br><br>My ex and his wife have five girls and they filed for divorce. He has primary custody of their girls. They have a shared friend circle and they absolutely cannot be around each other's kids. My ex's kids don't have my kids' allergies, but my kids are allergic to about 20 things, including the most common hay fever allergens. It's very serious and it makes life difficult, but we have our routines and my kids are very happy and healthy otherwise. <br><br>My ex's kids have caused severe reactions and even though we take precautions, it can still happen if they are in the same air space. We have been in a dispute over visitation for about a year now, but ultimately we ended up at an agreement that he would come to our house for any interactions with our kids. He doesn't want to come over and we've agreed to that as long as we keep them separated, there are no animals in the house, and we do a very specific cleaning routine, as well as not use any scented products or have any flowers or plants around. <br><br>My ex and I don't talk much, but his wife reached out to me and asked me to help them come to some sort of resolution. She told me that she wanted to be with her kids, that she didn't want to give them up, and that she was willing to risk having my kids have a reaction if it meant that she could see her kids. I told her no. <br><br>Then she broke into my house, which was terrifying. She had my kids locked in their rooms, I heard one of them crying and my youngest was banging on his door and yelling for me. I was in the bedroom with my partner and heard all of that. It took three officers to get her out. <br><br>My partner called from the bedroom to ask me why she was still in the house, and I told her that she still had my kids. They ended up letting her go after my partner asked about it, and I was terrified she would have called the officers to come back in and my kids would have been in harm's reach. <br><br>After that happened, she reached out to me, saying that she was sorry for what she did and that she just wanted to see her girls. I told her that if she did something like that again, nobody would be around to represent her in her divorce. <br><br>My friend called me the jerk for saying that. AITA?