Should I cut off my online friend due to their potential age and stalker issues?

Oh, for f**ks sake. So I had made a friend who recently confessed to me to have committed a sex offense, and my OCD is majorly freaking out about it. My anxiety and anger is screaming at me to get away from him or turn his face into a bloody pulp, but he has ADHD, thus impulse control issues, the offense happened when he was 14, his sister the victim (might have been dry), and he hasn’t made any advances. I just want an escape, but he has been a good friend so far. I’m practicing self defense just in case though. How do I calm my anxiety and stop thinking about this as obsessively as I have, for weeks on end now? But not be too careless.

I know this is a repeat post, but I need help. I skipped my first class of the day and could barely get out of bed because I’ve been so worried (todays my eighteenth birthday too, so what a fun way to spend my birthday). So anyway, the rest will be a copy/paste of before. If you can read and give advice, I’d greatly appreciate it. So I have OCD, and I like to use the app discord, and play games. I am a part of a discord with a bunch of people who play the game Minecraft but also like to talk about sports. Long story short, I have become online friends with a lot of them. Unfortunately, on discord, some people are idiots, and there have been people who have posted minor porn before (ex. showing a private part). In all cases, luckily it has been of someone who was 18 or above. One of the servers I’m in charge of, and they do sports “seasons” in Minecraft where it’s just for fun. One person posted porn in another server showing a private part from someone who I believe was above 18 (I barely saw it and don’t really remember it). I don’t know why they have to do this, but in the server I’m in, they have been in it for awhile, and talked in group chats and stuff, for a fair amount of months. I asked other users what I should do in my server, and the “seasons” last 3 games, and everyone seemed opposed to banning them, and some people even said one game suspension (the “season” is like 6 weeks), but I chose to make it 3 games but also said I could change it if people really opposed. This was much harsher than most people wanted, but I said I’d take the heat for it and not the other person who is sort of a co commissioner in it. Then, that same co-commissioner in another group chat was talking about the ishowspeed incident, and posted the link to it, and I have known him for awhile and didn’t give a punishment cause I really don’t like to stir up people getting angry at me. Then I had a thought, that if it were someone like ishowspeed or something, for example, and they were under 18 (most likely if they were like 17 or 16) that I would not outright ban the person from the server, especially if I knew them well just cause I think it’s the whole thing about snitching and worrying about causing a scene, but I would report the message to discord. I may have questioned wether or not to give a punishment too. But the point is, then I basically thought “what the hell” and got very mad at myself and started feeling very guilty. I keep coming back to how I would react if this happened and constantly doubt it both ways. I feel that if it were someone who were 16 or 17, and the user had posted the link, I probably would not have done anything besides report it to discord, especially if it were awhile ago and I did nothing, or faced strong opposition to it. Now I feel like a piece of shit who is complicit with this, and I keep thinking about it. I never want any situation like this to occur, and perhaps my ocd misjudges things, and I would obviously make a report to discord, but I cannot stop worrying about this. Someone please help

I make friends online and I like to make sure they are above 18- mostly cause the art I create is mature and I generally don’t like minors and don’t want to be near them. Lately my severe OCD has forced me to cut off all these friends cause even after they showed me ID, and birth certificates that it still was too much of a risk. I kept thinking it was never worth the risk. Well I kept one friend and I’m still terrified that they are lying. Sometimes I talk to them and I just feel sick then I feel guilty. They asked me to please not let them go too and now I feel like an awful person. I just look at their texts and I feel like “what if?” Or “what if I’ve always known they were a minor?” Or “I used to be comfortable talking to them- they could’ve been a minor!” And it drags me down so far I just really REALLY want to cut them off. I feel so miserable.