IS HE TRYING TO KILL ME, PLEASE HELP!?

ALRIGHT, I AM AT THE END OF 7TH GRADE. I MET THIS BOY, AND HE IS VERY POPULAR. HE SHOW ME A KNIFE ONE DAY, AND HE LICKED IT WITH HIS MOUTH WAS I WAS GETTING OUT OF THE BATHROOM!!!! I WAS SOO SCARED, AND HE CAME TO ME AND WHISPERED IF I TELL SOMEONE HE WOULD KILL ME! I DIDNT KNOW WHAT TO DO...I TOLD THE GUIDANCE COUNCIL! SHE GAVE HIM DENTENTION. HE WAS TALKING WITH HIS FRIENDS BEHIND ME SAYING "IF I DISCOVER WHO TOLD THE GUIDANCE COUNCIL...I WILL KILL THIS PERSON. TRUST ME." HE SAID THAT. ON FACEBOOK HE BLOCKED AND DELETED ME. HE SPOKE TO ME AND SAID "ARE U THE ONE WHO TOLD THE GUIDANCE COUNCIL?" AND I SAID NO. HE KEEP TRYING ASKING ME THOSE QUESTIONS AND I SAY NO. SORRY ABOUT THE SPELLING, BUT I AM NERVOUS...HELP!