Omg that sounds like a nightmare hc. I'd take whatever measures you can to get that parasite out of your life. Do you have a restraining order? I would absolutely look into one if you don't. It's AWESOME that you stayed sober though. If a guy with IVs coming out of his arm showed up to my door at 3 am, idk how I'd deal with it. Probably not in a good way. You were tried, and prevailed. It's kind of like the saying what doesn't kill you makes you stronger. It's also awesome that you were able to break free from autopilot mode and not give in. I know with me, once I've seriously entertained the idea of smoking long enough, I'm doomed.
Stay strong!