To understand your worth and do something to get yourself out from your situation.
To truly not believing anymore to : "It was a mistake, I didn't mean it" or "I'm sorry, it won't happen anymore" or "I was just kidding".
Ask yourself this :
Has he ever threatened to hurt you?
Has he ever trapped you in a room and not let you out?
Has he ever raised a fist as if he were going to hit you? Or worse, has he ever hit you?
Has he ever held you down or grabbed you to restrain you?
Has he ever thrown an object that hit you or nearly did?
Has he ever make you feel so small and worthless as if no one would ever take you in but him?
If the answer to any of these questions is yes, then please, stop wondering whether he’ll ever be violent, he already has been.
Get yourself out. Now is the time.