I wish I could take it back

I messed up so bad, and I don't know how to fix it. It was stupid, just a stupid thing. I lied to my best friend about something small, but it snowballed. Now she won't talk to me. We've been friends since kindergarten. It started because I was jealous of her new boyfriend. I told her he was seeing someone else, which wasn't true. I just wanted her to break up with him because I was lonely. Now she knows I lied, and she's furious. I keep trying to call, but she won't answer. I wish I could just take it all back. I ruined everything. I’m such an idiot. I miss her so much. Is there any way to make this right?