There is this guy i like and its not working out :( please help .. im begging you !!! read detail?

he thinks im very very annoying .. we are close friends but he doesnt answer my texts and thinks im upset too much and much more ... and we are in english cl together and im always so uptight and i always feel like i have to be perfect around him and i cant be myself and i have to sit a certain way and very little pet peaves . i have tried to relax but it just wont WORK ! i hate that cl cause i feel so awkward and uncomfturable ! it wasnt like that before ! at all , before i liked him i was all chill but now it sucks . and he never answered my texts and i would get mad at him and i know im not supposed to do that because ive looked this up but no answers have really helped my issue .. i dont gt mad anymore . but he just got a new phone and i asked him on facebook for his number and he ignored me ! he doesnt want me to have it !!! hes kinda not to social because hes new so he wont ask for my number ... he doesnt seem interested in even being my friend and we have been pretty close for like 2 months . we got in a big fight before and he said he didnt want to deal with my drama ... but we worked it out .. i have changed since them but he thinks im immature .. i need a long detailed answer that will help !! PLEASE .. it will help me so much , i really need the help .. especially about english cl .. im so scared of what he thinks of me ! like the littles things ! like i always worry that he wont like my earrings or how im wearing my hair ! ugg i dont even know what else to say .. it seems like noone gets it:(