Nobody deserves to be abused whether physically, emotionally, or verbally, especially when children are involved. Even when the abuser promises things will change, you should think about how many times they have been promising that without making an attempt. Just get out of the relationship or hold that person accountable. Say you're going to go to xyz therapy program at a certain day and time. If they show up, that's great. You know you are in a successful relationship with somebody who has good intentions. Addictions and abuse are very similar, because they are both things that people can't just stop automatically. Smoking is a chemical addiction, while abuse is an anger management problem. If they're not willing to get help, get out of the relationship.