He crossed the line

So background my boyfriend and I were together for 6 months and I accidently got pregnant but was thrilled. we lost the baby and he said we could try again. I found out on monday that he cheated on me but I took him back because its my belief that second chances are worth it when you love someone enough. He quit his job with no back up at the beginning of the week. I found out yesterday morning I was pregnant. I was thrilled and he was less than excited. The situation was less then perfect but "love concurs all" right? Wrong. I am sitting here switching between sobbing and raging because he crossed the line. That line being NOT MY KID. What happened is i was making dinner, my toddler was whining as toddlers do. My now ex picks up his giant tool box, slams it on the ground so hard the whole apartment shook, screamed directly at my 2 year old "Enough!!!" i nearly shit my drawers noah screams in terror my mum runs up stairs and takes him so i can deal with this. im so scared i tell him everything he wants to hear to calm him down. when hes calm I suggest he go to a friends till we figure out what to do and while hes gone i broke up with him and packed his shit. I had no idea he was capable of that. Im devestated and broken hearted and when he came to get his stuff all i wanted was to run to his arms cause he was my comfort but we are over no matter how i feel. if i would take a bullet for my son I can handle a broken heart. He irrevocably single handedly destroyed everything. I don't know what the point of this was I guess I just needed to vent. Tl;DR My now ex turned out to be an absusive asshole.