I too was in a abusive relationship confused and all can say is keep strong and keep reminding yourself that under no circumstances should a man ever hit you. This wasnt a loving relationship but one about control, you and your children are so better off without this person.
please please dont take him back, hes never going to change, i put money on it that after the first time he hit you he promised to never hit you again and he did, please dont fall for it again! Move on for the sake of you and your kids, you deserve better and believe me there is better out there for you. good luck confused, you know where we all are if you need to talk :)