Feeling really lonely

a few days ago my boyfriend and I split up. We got three kids together and honestly it was the toughest choice I had to make really. He was a great father but not so great in our relationship. He pushed a lot and never wanted me to go out or really have friends. I was always wrong he was always right. His drinking got to the point I could not handle it no more being more forceful more controlling in many ways. I had to get a restraining order on him and we been together for almost 8 years it broke my heart really. I been cleaning house and packing his stuff up little by little but it's so hard. He had admitted to doing something that conceded me for the safety of my childten and myself. I feel lost and lonly I really don't have much of a support system and that's really hard as well. I became a single parent in a matter of seconds it seems like I have not much time to handle or cope with anything I constantly have to keep strong but all I really want to do is brake down and cry and the anger toward him is so strong as well. I been broken over and over and all I wanted him to do was get the right help. It hurts bad really bad and to explain to my kids why daddy is not home is the worst and makes me super angry. I feel lonely truly lonely with no one to talk to.