So, we have a room mate who pays rent but is literally never at home. He only comes to the house to "hang out with his friends" (aka buy drugs). I told him specifically on two occasions to not do drug deals in our home. He understood, but then one night, two weeks ago, he said "some friends are coming over to watch football". I'm not a dummy, of course he was going to buy drugs.
The same room mate has abused and tortured our kitty. Boo is only about a year old. He has literally scared shit out of him by poking him with broom handles, folding him up into boxes, and he said at one point he cut off Boo's air way. He has smeared feces on the cat on occasion as well. When Boo sees him, he immediately begins hissing and tries to fight him, understandably. We have approached him about this situation as well (on three occasions), yet continues to bother the cat.
This room mate and I used to be close, but he has become very strange and distant. I do not feel comfortable around him, and nor do I feel comfortable leaving my lady around him alone. I feel as if he could go postal at any moment.
Drugs have really messed up my friend. He smokes weed, does hallucinogens, and I think even some uppers like Adderall and the like. He is also on antidepressants, so he has some underlying mental issues as well. I do partake in mild ganja use, but it has never affected me like it affected my friend. I truly believe he is insane. I don't think these mental problems were addressed before he started becoming a user, and the drugs exacerbated his problem.
So, my plan is to change the locks on the house and tell him to return his keys. I wanted to change the locks before I told him. I'm a little afraid of the consequences of this. He hangs out with some REALLY shady people (drug dealers). These people have been in my house and seen what I own (lots of nice stuff). And I don't want people breaking into my house and stealing/raping/murdering. We do have a security system that we use religiously. I'm just wondering if I'm being too overly cautious with him.
Does anyone have some advice? He used to be such a close friend and now he is a whacko. He has done some shady shit with girls outside of our house, too, a few years ago. Like, borderline illegal stuff.
TIA
TL;DR
1) have room mate
2) room mate buys drugs in our house, abuses our cat
3) addressed these issues to him directly, but they still happen
4) kicking him out and changing the locks
5) worried about possible repercussions from him or his shady friends
6) wondering if I am handling this OK or if anyone has any extra advice. TIA.