I'm so sorry for what you're going through. If you do some reading in this forum you'll see that this is pretty much textbook for a relationship with an alcoholic...whirlwind romance, fast commitment, moving in together...and then things fall apart.
What ISN'T textbook is violence. That is NEVER acceptable, drunk or sober.
Your instincts are screaming at you to stay away from this mess. Listen to them.
It's great that you have supportive family and friends. That will help you through.
It's nothing you did, said, or are. It's addiction and you can't fix it.