So some background. They started seeing each other at work shortly after he had a long term relationship go very bad. He’s 25 slowly getting his shit together. She is 30 with a former heroin addiction, two kids she dumped on her ex after he got out of jail, and doesn’t have a drivers license or a job. I would go on but she’s a serial parasite on everyone she comes in contact with.

I was nice and didn’t say anything for a long time because he cares about her.
1 st serious incident was drunkenly screaming and having a fit because it was late and we asked her to turn it down.

2 nd incident was trying to convince him to quit his well paying factory job to go to this door to door scam which thankfully he did not fall for. She did and is now unemployed.

3rd incident was the most recent. Everyone was home but him so we all went out Friday and I knew she was down on her luck so we had her come out covered her bar tab etc. she described him as controlling but had a problem with all of us saying that was not okay.... once we got home she would not stop talking about it. She escalated to threatening everyone with violence. Followed by slamming doors for hours and sending nasty pms on Facebook.

The following day I called him and told him she needs to get out and is not allowed in our house.     
I explained the situation and he was treating it like high school drama and trying to make excuses. I’m about to tell him if she’s not out by Friday I will have her removed when he’s at work since no one wants her here and as far as I’m concerned she’s trespassing if he’s not home.

Thanks again in advance. I’m just conflicted because I know it’s hurting him but I can’t live with a temperamental person in my home who does nothing but cause problems.