Exclusion, Bullying and Secrets...???

Ok so about a week назад i was just at school having a good день and left to go to an orthodontist appointment. But when i got back apparently there had been this big hubub about this friend of mine sharing this secret of this other girl (semi friend) with our whole group. Now there are about 15 girls in out group and i was the only one not there. The secret was kinda big, something about her doing something with some guy that she regrets but a friend let slip that it was worse than making a porno movie (I'm not sure how many things there are worse other than getting raped, anyway...).

Now when I got back to school everyone in my group was talking about it so I walked into the class and it was a kind 'passionate' discussion between everyone so i asked what was happening. And everyone just told me not to be so inconsiderate (i had no idea what they where talking about at that point) and that Bella (the girl it was about) refused to tell me and told the rest of the group not to tell me. But they also refused to talk about anything else so they used code to talk about it when I was right there.

I asked my best friend a bit later into the lesson to explain what was going on and she blew up at me and wouldn't tell me anything. We 'discussed' it and just generally disagreed on what to do in situations like this. She tried to turn it into this whole "you have to trust me that its better if Ты dont know". Anyway there where other things сказал(-а) too. So I thought ok, i can just ask the girl who сказал(-а) it in the first place (I know that might seem mean). But my best friend (lets call her Sarah) went and told her not to tell me.

Now they all talk about it all the time (every friend I have in school) but none of them will tell me. I know it could blow over at some point but due to the secrets size i don't know when. They always make shushing motions and act all awkward and suss whenever I am around and its just making me sad and nervous.

I kinda also get the picture that b