Betrayed by my friends

So, I had these three close friends. I trusted them with everything. We claimed that we were all best mates and would be forever.

We were friends for almost ten months.

When it got to April, I started having quarrels with one of them, Amie. She had told one of her other friends, who wasn’t a friend of mine at all, about some personal things. Then time after time she let other stuff slip. I let two of her things slip, neither major, too. I think I should probably mention that fact.

Me and Amie finally came to loggerheads just under a month ago. My sort-of-boyfriend at the time had told me one of his friend’s secret regarding a girl who is the girlfriend of a friend of mine cheating. To find out whether this was true or not, I told Amie about it as she is close to the girl. Instead of confirming anything, Amie went and told this girl despite me begging her not to. This caused all sorts of problems for me with the lad and caused my trust in Amie to dwindle considerably.

But for the sake of my two other mates.

A couple of nights ago we had a sleepover and me and one of the two other girls took a few pills. They weren’t anything major, we weren’t sure exactly what they were as we’d been given them by a friend. They didn’t really have much of an effect anyway.

The other remaining girl, Pennie, and Amie didn’t seem bothered by this really.

But the next day we had a tiff, nothing major just little niggles and the tiff wasn’t resolved.

I later found out that Amie and Pennie had gone to Amie’s father and told him all about the pills and he had contacted mine and the other girl’s parents. The other girl is now grounded for the whole of the summer holidays (7 weeks).

This has caused all sorts of problems and what makes it worse is that Pennie and Amie don’t even seem bothered by it. Neither of them have apologised.

What should I do?