Did i freak him out?

At school, about six of us were outside in the reading garden. My ex knows I like Jonathan, and Jonathan was the only guy out there. My ex (Josh) told me he told Jonathan that I like him, but I didn't believe him. I told all the other {girls} out there...

what he said, and they make it all obvious.
Them: Jonathan, did Josh tell you a SECRET
Jonathan: No...What kind of secret??
Them: nevermind
Jonathan: Tell me, it's okay. Was it about me?
Them: Yeah.
So he starts looking at me..and I'm pretty sure he knew. He pointed to me, and then to his heart..I just shrugged my shoulders, got up, and whispered in his ear: "I'll text you tonight and explain it to you" So later that night:
Me: Hey, want me to explain the secret? btw, it's ashlie.
Jonathan: Yeah.
Me: Well, earlier today Josh told me he was going to tell you that I like you, which I do. But we all thought he told you so they made it kind of obvious..but yeah, the secret was that I like you..and I know you probably won't date me, lol but I'm not going to be all awkward about this..and don't freak out!!!
No response..
He hasn't answered me for the past 2 weeks, and won't go anywhere I do. Did I like, scare him away??

He just wasn't/isn't interested.

so now he basically hates me because I like him??
probably because I'm not the "prettiest girl in school" more like the ugliest..

I was stuck in the same situation not to long ago. I know he probably ignores you now and wont talk to you but he will come around. Soon he will talk to you just act normal around him and dont have a panic attack.

Some guys are azzholes like that. From what you told him, you don't sound creepy at all. I mean you made it clear that you're not EXPECTING anything. So what is his problem. Even if you scared him away, I wouldn't worry about it if I were you.