Toxic relationship

Hi everybody, I am looking for some advice on my relationship with my babies father. He was in a long term relationship with someone else and we got into a relationship really quickly after that. I feel like he is not the person he portrayed himself to be. I find myself walking on eggshells and being very distant. He can be very aggressive toward me both verbally and physically. The physical abuse seems to be getting worse and can be exasperated by alcohol. Things have became very toxic and I don't want to be around it so he has moved out of our family home. He is persistent about coming home and says he will get help for his aggressive and toxic behavioural issues. I have a lot of love for this man but my worry is can a leopard really change its spots. Any advice from anyone who has been in a similar situation would be appreciated