Originally Posted by
MindfulMan 
He is beyond disrespectful. His actions display extreme narcissism bordering on being a sociopath. People aren't people to him, merely objects to be played with and hurt. The issues go far beyond his addiction, although if he ever does get sober, he will still be a sociopath. He probably has played similar games with anyone who has tried to treat his addiction.
He's not just a terrible person, he could be downright dangerous, and psychically he IS dangerous.
Be prepared for him to try and woo you back. Narcissists don't like to lose their victims, and can be highly engaging and desirable when they're trying to keep a victim in their clutches. Don't buy it. As soon as you relent and let him back in, he may be nice for a minute, but will hurt you again as soon as he feels that you won't leave.
Unfortunately his best response to you deleting him will be the cold shoulder. Hopefully he will just move on as well.
This. Being sober is unlikely to change his behavior. The new woman is the new target/supply. He will use her too. The "plus" side of that is if he's busy manipulating/brainwashing/grooming her, he will have less time to harass/bully you cause he will have to spread his energy.