My friends backstabbed me what do i do now?

[Degrassi]

So i had a huge group of friends who i thought were my friends but it turned out they weren't really my friends (I'm a junior btw)

So last night i went on Facebook and my friends tagged me in a status that said "We had a fun time at the party to bad Jordan(Me) wasn't invited" and they posted a picture of them having a blast at the party and they made the status public so everyone could see it and people were posting comments like "LOL" "You go guys" and tuff like that most likely making fun of me my EX friends also did the same thing on twitter

I'm so sad right now because now i have no friends and i don't want to face School on Monday
I'm a male btw and my EX friends were Boys and Girls