Semi long post!

So today my daughters father asked me to bring the baby to see him, she’s a newborn (3 weeks old, almost 4 weeks). I didn’t really want to because she’s so little but I ran out of formula and there’s literally none around me and he found some and got it. So I just decided hey, she can get her formula and he can see his baby. Now I have 2 children that are NOT his, so of course I have to bring them with me. I can admit my children have behavioral issues and absolutely do not listen and cry about everything. But my daughters dad does not understand boundaries, he yells at them, curse and scream at them then gets upset with me because I’m not tolerating it! So we got into a big argument ( I didn’t want to argue in front of the kids so I just stopped talking and he kept going). He was cursing at me, belittling me, talking mess about my children and my parenting. He knows how my children are, we’ve been in a relationship for a while way before we had a baby together. So my son in 3, and my BD feels like my son is soft because he cries a lot and is very attached to me. So my son started crying because my BD screamed at him and tried to “ rough him up” and he got scared and started crying so loud. My BD got in his face (like you would a grown person you’re about to fight) and told him shut up lil Ni**a toughen up. I said absolutely fuc*ing NOT! Get out my sons face and I told my kids let’s go we are leaving. He told me I’m not taking his daughter anywhere and I grabbed the baby to put her in the car seat. He pushed me so hard ( baby was in my hand) and he slapped me ( she was in my hands still). Not only did he disrespect me, my children and our newborn. He put his hands on me while holding the baby and he did that in front of my kids. Then ge proceeded to say that’s why their father isn’t in their life and I said really, you’re gonna say that in front of my kids. I’m so done with him, I’m not bringing my baby nor my kids around him anymore. He told me he’s going to take me to court, then so be it. He was acting so crazy I honestly was scared but of course wasn’t going to show it and I was going to protect my kids by any means. I left and went home, my kids were so happy that we left and they felt more at ease.