Sorry to hear that,
I had a similar thing happen last fall, a girl I had a crush on for a couple of months (never had the guts to tell her, but damn I wrote some nice poetry about her) unfriended me IRL and on FB and trashed me to a couple of our mutual friends. They put her in her place saying something to the effect of "I've heard what he wrote, it was never anything bad and it was beautiful -- and if anyone was ever so lucky to have someone say such good stuff about them. She hasn't spoken to me since October and we had been friends !!
In the end I am glad she showed this side, kinda did me a favor -- I wouldn't want to get stuck in a relationship and then being dumped by such an angry person. I've been there/done that.