Ok.. high school drama stuff i neeeeed help.?

ok here's the wholeee story. my friend emily hooked me up with this guy andthen she got pissed at me. my and cody dated for about 1 month, maybe moree... and broke up because my other friend nevada was telling me how she liked him and everything and when i asked him if he liked her he said yea so i asked him if he would ever date her and he said probably. so the next morning i was talking to my other friend sammy and she said he was only dating me because he didn't wanna be single and couldn't find anyone else to date him.. so i asked him about it and he said he did like me but couldn't find anyone else. i broke up with him and nevada was there for me and promised she wouldn't date him and everything. then emily started talking to me and said how she was sorry for his dumbness.. the next day on facebook nevada was in a relationship and i asked who and then my laptop died so i texted her and she was like don't be mad at me and i texted her back and told her how mad i was at her for dating him and she said she was sorry and everything, but she wasn't gonna break up with him.. so i talked to emily about it and she said she was pissed at me so i ignored her, and nevada.so then i turned to my other friend becca for help and she didn't help me at all! then i talked to shelby about it and she said she was pissed at me too, so i turned to sammy and everyone was mad at sam too and we can't figure out why. then out of nowhere katrina (my bestest bestie) decided to hate me too... i don't get any of this!!! what did i do or not do? why is everyone mad at me? and what should i do about it? i keep trying to leave everyone alone but they all keep getting mad at me! pleasee tell me what i did wrong.