I just went through this. I will give my experience, and advice, and action that I would advise to pursue.
I also had a sexually-charged conversation with someone on Reddit, and the person and I exchanged Instagram nicknames, which granted him instant access to my followers. Big mistake, yes I know, bite me. He did leak an excerpt, and of course he made private accounts, to this day that have not been taken down. He has not done anything since March 25th (the day the leaks happened). And I doubt he will, as per advice given to me by others on TSR + gut feeling.
If I were you, tell your friends to IMMEDIATELY block this person. But they will not block it. Because they need spice.
Look, let me tell you the STOIC path you should take.
We all do mistakes. We all do stupid things, which lead us to awkward moments. I say to that,
SO WHAT? I am 16. People found out I was a porn addict for 5 years. They have screenshots that I went on Reddit and I said, I AM STRUGGLING! They gave me hell for the convo. I regret my mistakes, but I MUST MOVE ON. I WILL NOT LET NEGATIVITY STOP ME. I was cancelled. A lot. And people spread this personal thing about me, thinking I would remain silent. They were right. Until now.
Just laugh it out. You have learnt your lesson - do not have sexually-charged conversations with people online. It will lead to a stressful situation like this. Of course, the point stands that if a screenshot is taken, you would be informed of it, BUT I will still advise you to tell your mates to block this person, and preserve any chat documentation. I am pessimistic about the screenshotting of the chat, but now that you are in water that you cannot measure the temperature of, it is best to get out of it.
You have learnt that the Internet can either be a wonderful place, or it can have such a dark side.
Now for the action/thriller part:
READ THIS!
How to check if those screenshots have been leaked, and how to
LOCKDOWN (you read that right) ALL YOUR SOCIAL MEDIA ACCOUNTS, GIVING YOU UNMATHCED PRIVACY! I am not only referring to this situation, but these are general skills everyone should have.Number 1: Google Alerts. Wonderful, fabulous thing. Basically, put in a search name, a new result comes in it, you will be informed. You can say, put, your name, full name, keywords along your full name, keywords relating to the context of the convo, relating to social media, etc etc. You can then manually verify the results. This only works for Google as far as I know, but it is a brilliant stepping stone.
Number 2: PRIVACY! I dislike one thing about social media. A lot of them want to give this hassle-free experience, in which what happens is you link your social media accounts together.
DO NOT DO THAT! Remove any links between Instagram, Facebook, Snapchat etc that lead to another page of/about you! This massively solves problems pertaining to privacy. Go to your FB, Twitter or whatever SM account you have, and MAXIMISE THE PRIVACY SETTINGS. REMOVE MOBILE NUMBER, EMAIL ID, BIRTHDAY, DOB, AND PERSONALLY IDENTIFIABLE INFO.
Number 3: GDPR. If you live in an EU-member state or other countries that follow a framework similar to
GDPR (shorthand for GENERAL DATA PROTECTION REGULATION) and God Forbid you find the search results online, you can tell search engines to
block the search results from appearing on .com (if memory serves correct) and domains that are in the EU, such as .pl for Poland, .de for Germany, .cz for Czechia etc. I mean, as far as I remember, 27 countries follow GDPR. Quite a big number, in my humble opinion.
Number 4: Reporting and Documentation, your best friend. You mentioned that you fear this scammer posted this on public story. If you have proof of this, send this to Meta/Facebook/Snapchat help team immediately. This will make the account go away. Also, perhaps Meta can filter out those specific posts, but do not bank upon this option excessively
Number 5: Diplomacy. Do NOT stoop down to the scammer's level, by making a fake account and contacting the scammer. Nope. Not going to do that. This will only exacerbate the situation. I would rather recommend something contrary - play it cool. If the scammer attempts to contact you, regardless of blackmail or not, you will instantly have proof that you are being blackmailed. And you know who loves proof? It is this wonderful thing called
Law Enforcement.
DO NOT SEND THE SCREENSHOTS TO THE SCAMMER! BIG NO! You never let people know you have the 'smoking gun' (metaphor). You use it when you are in a tight spot.
Number 6: Truth, the best weapon. But it is by far, the most difficult one to do, and I would not recommend going down this path, but I will list it. Maybe it might fit your circumstance.
Truth by far, is the best weapon one can have (metaphor). You can use it greatly to your advantage. Do NOT go on a mic and say to the whole school that you had this problem. If you have a trusted friend group, then go ahead and tell them that you did a mistake and do not judge me for it. If you do not have any friends in school, that is the best thing. Why? Because you can then show that you do not care what people think. You do not need to justify your actions to anyone. You know what you did wrong. You yourself writing this thread, and admitting to the fact that you suspected something but you were desperate and took the bait, actually shows me you are a very very strong person at heart. And if people fail to recognise that, then for sure it is not your problem.
Admitting one's mistake is the trait of the strong, not of the weak. Saying in your mind and to your near ones, that you have something you want to work upon, is your greatest strength, ever.Problems come, Problems go. But the person at heart, remains. Do not stress about life. Be a goddamn Churchillian. Do not lose courage, Do not lose your strength and your smile and do not give in to stress. I hope, my response was of, if not full, at least some help.
Sending happiness and hope and courage.