You should probably tell him that his behaviour in unacceptable. Tell him that this cannot continue the way it is now, that he has to actually put effort into changing this, for the better of all of you.
Below we are going to write something for him to read, maybe it will help him understand what he’s doing and that he needs to stop this
Elias, there are repercussions. You just don’t see them since you’re blinded by whatever is making you do these things. You are hurting the others in your system and in turn hurting a part of yourself. You are abusing yourself by doing these things to them mentally and it is unsafe, could make your entire system become unstable, crash and burn for all of you basically. Even if it gives you a kick when you’re in the mood to do these things it really isn’t good for you,
at all, no matter how crazily addictive it may feel when you get these weird episodes. If you find it fun or it gives you some sort of happy feeling, some twisted joy, it is not
true happiness. This is not happiness for you or the others. You should not act on these feelings, be it with the others in your system or outsiders. If you really feel like you can’t stop yourself for awhile, why not go watch some R rated movie or anime (only if you can watch it by yourself without the others seeing or getting upset by it). Don’t hurt anyone else over this, don’t hurt
yourself over these feelings. If you try your best to ignore this, to understand it’s wrong, if you can accept that, try to ignore this, you can really make a huge difference in all of your lives.
There is more then this, I’m sure you know that. Why not fill your heart with love instead of hate? Why not give your head a shake and realize you’re so oblivious to the fact your causing your own decline, slowly, bit by bit, destroying all that you actually care and love?! Get ahold of yourself!!! This isn’t who you really are, this doesn’t do anything of true value for you. So snap out of these ludicrous crazes. Don’t tell me you can’t, I know you can. We know you can. You can at least realize you’re wrong and try your best to work with them and help to stop this. If you don’t, you’re ignoring the truth. You’re ignoring the truth you already are aware of! Don’t start feeling bad either, like if you do admit to this, or liking doing it, you’ll be admitting you’re wrong or bad or something. There is no fault in being honest and trying to get help, but there is fault in continuing to go on with this stupid charade.
You need to do something about this, think about it!
If you don’t, I guarantee you’ll regret it, trust me, I know.