There is no need to tell me how wrong this is; I already feel guilty enough. I don't know what I was thinking! The guy is the same age as me and was really hot and he took his shirt off... one thing led to the next and we were both naked and I fingered myself and he came. :(

I was talking to him today on skype and he assured me that he would never take screenshots and that he prefers to keep me to himself. But you can never trust someone, you know?
I feel so guilty and I can't concentrate on anything but this. How do I stop thinking about it? :(

I don't know how you can forget about it. You can't know for sure that he wasn't taking screen shots.

What's done is done, is all I can say. No sense on dwelling on it. However, the more you contact him, the more it will hang around you.

How old are you? If you are underage, he could get in serious trouble for distributing child porn if he did record and lets it out.

But otherwise, the only thing you can do is move one and never let it happen again.