Thanks guys :)

Deja vu. That happened to Red this summer: the exact same thing. Please observe:

Turtle (as I shall call her): (an email) I just got married! 

As you can imagine, seeing as she sent this to about thirty people, there was a long debate about who she got married to. Naturally, Red said that she married Gollum, who is the group of friend's romantic scapegoat. (As far as I know, he's never been involved in any kind of relationship, but he always gets dragged into the more ridculous scenarios.) Turtle blew a fuse at that and promptly said:

No, I married Red. Didn't he tell you? (She was talking to me at the time. I was running messages.)

Red denied it, of course, Turtle insisted, of course, Red denied more forcufully, of course, and Turtle pulled out the big guns. She insulted Red about the topic that is most sensitive to him (and which I shall not tell you). Now, there are only a couple of things that make Red mad, but when he gets mad, he gets MAD. So Red asked her to take it back, and she wouldn't, and she kept saying the same thing about him. So Red had a screaming fit. I was there. It wasn't fun.

Then, I went away to camp for a week and I didn't have email access. When I came back, I found that Turtle had found this website and had gone through it, looking for the most embarrassing things we both had said and she had sent it TO HER ENTIRE CONTACTS LIST OF ABOUT THIRTY PEOPLE. She then threatened to tell you all my secret. It took an enormous amount of groveling to get her to not tell you all. 

And that is the story of why Red and I both do not like Turtle any longer.

Now: for the advice. 

Avoid your ex-friend. Just avoid them. If you see him, just tell him that you don't like blackmailers and you don't want to see him. If he tells people about you, deny what's not true and if people ask you about the true things say, "So what. That's who I am. What are you going to do about it?" or "Everyone makes mistakes. You're not perfect either."

It can be hard to have long distance friends. At least you have her email, right? Maybe something just came up. Why don't you email her and ask her if she's mad at you for something? Just be patient. I'm sure you'll be able to contact her soon, and in the meantime, don't worry too much about it, okay? 

I think that she either: a) switched emails b) got grounded or c) can't email you/is way too busy.  I don't think she's mad at you--sometimes people, well, just can't email.

@Zach and Maggie: I have emailed her recently, so she's either ignoring me or at camp(let's hope it's that she's at camp). But do camps in the US ever last like 3 months?

It's just a guy.  It may feel like the end of the world, but this is so easy to fix it's not even worth freaking out about.  Just keep saying you don't like this guy whenever someone teases you about it.  Don't overdo it, though, or it will just convince them more.  And keep dropping subtle hints about the guy you really like.  Someone will eventually get it. 

Invisible kickball? Just don't.

 That's EXACTLY, well almost exactly, what my friend/enemy does, Eliza! She got jealous of me and my friends, and started calling us mean names, and that we were horrible friends. Then she wants to be friends with us again. I mean, she's thrown ROCKS and SHOES at us! And tried to get the grade against us! Now she wants to sit with us at our lunch table. THIS HAS BEEN HAPPENING FOR TWO TO THREE YEARS. The guidance counselor helps, but my friend/enemy STILL wants to be friends with us, even after she says she hates us. Eliza, once again, that happens to us at reccess: "You cheated STING! This is unfair!" And she runs away, then the next day she acts like we're friends, even after we've told her that we're done with her dramas. Suggestions????