Leave x it may be hard but it will so be worth it in the long run. A man who truly loves you wouldn't dream of laying their hands on you. You deserve someone so much better and I really hope you leave xxx
My mum always said if man hit you once he will do it again. I don't really know for how long you are together and do you have kids, but this is not a good sign.
RUN! I was in an abusive relationship for 5 years! once kids are involved it makes it harder! I left when my daughter was 5 months old. I have gotten into a new relationship when she was 7 months old and he has raised her. she is now almost 5 and known nothing about her other father as he hasn't made any effort to stay out of jail to see her since her second birthday.