The only advice I can add now is not to fall for any of his crap once he starts begging and pleading and promising to change. An abuser will say anything to win you back. They'll change into a perfect angel, as long as they're afraid of losing you. After they've got you back where they want you, then you're a punching bag again. And if you manage to resist the crying and begging and pleading, then next comes the guilt trips and threats and accusations.

A person doens't have to hit every day, every week, or every month, to be an abuser.

And I highly recommend mental health treatment. You'll need to be strong enough to resist the manipulation tactcs, and you'll need to know what the warning signs are, the next time you see them.