Hey NYPD, Welcome to the site! Only you know when it's time to get off the roller coaster. In the meantime, we can help you to find the right path for you. To me, your post contains a red flag
:
The verbal abuse started slowly then the berating, the threats and the blackmail came along and the last but not least was the physical injury, even though not serious; he denied it and blamed me.
Verbal and physical abuse, in my view, are unacceptable. You might want to read up on Boundaries at the Tools button (above). Can you tell us more about the physical injury? That sounds extremely hard on your self-esteem. Suggest you be careful to avoid blaming yourself or rationalizing his abusive behavior. It's not OK, is the bottom line.
Many of us, including me, have been down this road before you and we are here to help. Let us know if you have any particular questions.
LuckyJim