HELP! Stupid people problems, oh, and friend problems?

OKAY! It all started, 4 days ago when my friend Sarah, became vegetarian like me, and everything just blew up! My two best friends, and 1 of my kind of friends Hate me, Their names are Devin, Mark, and Molly. At this moment, Mark, is trashing my message boards on my website, saying he hates me for grading him badly on appearence for a sea creature project, and it was VERY VERY bad in appearence. And everything else he won't grow up about. Lol, Devin hates me for "no reason" but really, he is jelous cause he thinks Sarah likes me, and WE DON'T! And Molly, I've been friends with scince 1st grade, and now she is all the sudden a jerk and is best friends with Devin, she also talks behind my back about me and Sarah. And everyone else at school says that we like each other and whenever I write in Japenese, people say that it says something like, Sarah+Tristan(me)= love!!! That bugs the CRAP out of me! I really only know 10 words in Japanese! I hate EVERYONE! THEY ARE ALL FACES! HELP!!!!