Feeling heart broken

My husband of 4 years, grabbed me with both of his hands almost to like pick me up. He then placed his palm over my face and pushed me away. I've never ever seen this side of him. I'm so heart broken and confused. I want to leave. I want to run away. He left to work. I broke down and cried in front of my 2 kids. How could someone I love so much do this?

*30 minutes before this happened *

He received a text message. I never ever read his messages. I trust him. Well his phone vibrates. He tries to put his phone in his pocket but I tell him check it. ( waiting for our daughter to text) he had no choice but to open it up. I see it. And I see its a group message and a picture is attached its of a girl in a short skirt posing. One of the replies says send nudes! Another says do it. And he looks and me and says, I don't know who these people are. I already asked them to stop texting this phone. They are trying to reach the person who had this phone number before me. I sit there in shock and i don't even know what to say. ( we are at a family dinner) and I suddenly get sick and want to leave. So we leave. We live next door to family, at this point I don't want to even be in the same vehicle as him. So my baby and I decide to walk home. Which is literally like 200 feet away. He's calling me names telling me I'm stupid for acting this way, I'm a dumbass, we get to the house and he has to open the door and he continues to call me names. When I ignore him, is when he decides to put his hands on me. I tell him if he puts his hands on me again ill call the cops. He thinks he's done nothing wrong. Like its ok. He comes up to my face literally our faces touch each others and says what are you going to do about it. I've always read and hear about women in abusive relationships. I always say ," Why didn't they fight back? Or leave their asses!" And i find myself in that same situation. Im not afraid of him. It took me A LOT to unball my fist and not knock his ass out. I mean we've been through bad times and good times. I'm sitting trying to make sense of this fight. Did he get this upset because he knows exactly who these people are? Or am I just worried about nothing. 😔