Baby fell off the couch earlier + Mental abuse vent

I was in the kitchen when I was making sandwiches for me, my son ( 21 months) , the father of my kids & his 11 year old daughter. His daughter had picked the baby( 4 months old )up from the swing to the couch while I was finished up in the kitchen. When I was done, I got on the ps4, I looked at my baby And figured she was fine, she won’t be able to fall off the couch. His daughter was next to her on her phone while I was playing then like 10 minutes later I heard a thud, I turned around And I see that it was the baby that fell. His daughter just sat there shocked And I picked up the baby trying to comfort her from crying..

I don’t claim him as my S/O so I say the father of my kids, he woke up out of his sleep cause he heard what happened And he was yelling at me trying to find out what And how it happened. Starts telling me it’s my fault ( I do blame myself I should’ve just put her back on the swing when I was done making the sandwiches) .. This was the first time she even fell from anything. So The father of my kids proceeds to tell me it’s my fault I shouldn’t have been on the game And starts being mentally abusive. When I told him Okay you don’t have to keep telling me those things, I’ll leave this house he then says “that’s not going to scare me, I’ll smack the shit out of you” And from there it’s like I’m really tired of this dude being so quick to be disrespectful to me this been constant for too long when he’s mad. When I tell him I’ll leave just so I won’t have to deal with his bullshit, he finds that as a threat .

A person who claims that loves you wouldn’t tell you he’ll smack you And talks a whole bunch of shit to put you down claiming you’re a bad mom even when you’re the one who does everything when taking care of two babies.

I’m ready to speak to someone from the DV Hotline, idk what else to do I feel so helpless And not that I’m scared of him but I’m scared of what his intentions might be when I finally decide to leave him. I get threatened that he’s going to break my parents windows again And get them in trouble to where they’ll end up homeless, tells me he’s going to take my kids away from me cause I’m a bum ass mother, I don’t do shit with my life, he doesn’t want his kids aren’t going to be raised at my parents house abuse of the way I was raised ( whatever that’s suppose to mean )

Before I get the just pack my things And leave advice, it’s not easy. He’s the type to come look for me, he would go to my parents house, he’ll blow my phone up And bomb me with text messages telling me he wants me back wants to be a family etc

How do you want to be a family if you don’t know how to be a family.

This relationship was never a partnership

I don’t want to be trapped anymore in this relationship. He tells me if I don’t want to be with him to be honest but when I do tell him, he loses his shit And starts threatening me. I honestly don’t want to end up dead because this man can’t accept the fact that I don’t want him And that I want to move on with my life.