Is it normal to masturbate in school bathrooms?

I've masturbated a few times in a school bathroom. I know, gross.

But what's more worrying is that a day later after the last time I did it, these fours kids were talking about how this kid, "Ryan" had posted a video of someone jacking off to his Snapchat story. I have no idea who was in that video, and I hope to God that wasn't me. But the person in the video ejaculated into his underpants, which I did not do.

Is there any way how to know if that was me? Or is there no point in worrying about it because a) it's me and people can't unsee it, b) it's not me and that video will never include me, or c) it doesn't matter because it's only two more fucking years until I head to a place where 99.9% of the people there won't know me.

I'm worried because this girl was interested in me(or that's what I think), and then suddenly she became really cold. A few others have also been a little unfriendly.

Thank God my friends don't use snapchat.