How do you move on from a close friend?

Okay so last week me and my friend go into an argument bec of stupid stuff n i told her i didn't want to b close friends any more that i wanted to b just reg friends like school friends, soo she was begging me to be her friend still that she rele wanted to b close friends but at the moment when i said i didn't wanna i really felt that i didn't need her as a friend so i told her no just reg friends. So that whole weekend we didn't talk and we ALWAYS talk for hours every day and so then that monday i went to school and she didn't wait for me after any of my cles like she usually does so i didn't care at that point but then later that night when i got home from softball practice i went on facebook n i wanted to try n msg her n try n work things out n hopefully get things back to how they were but.. she blocked me on facebook and twitter. So after i noticed that i started to cry n i really noticed how much she rele meant to me n how she was my best friend so i txted her n i say "we seriously need to talk" n she just said "there's nothing to talk about" and i tried to msgs her again but she didn't respond.. so that whole night it too me 2 hrs to fall asleep bec i was hysterically crying over this.. so the rest of the week i felt sick to my stomach bec of all this n finally friday i cut 7th period with my friend n went looking for her bec she had lunch so i found her n finally spoke to her face to face n tried to straighten things out n asked if she could forgive me n she didn't give me a Straight answer that period so i said txt me nxt period n so 8th period she didn't txt me but she waited for me after 8th n we talked and she said she was gonna forgive me that she nvr said she wasn't so like i kinda felt good about everything but i was still upset so then after school she still didn't txt me so eventually around 5:30 PM i txt her and i said "okay so u still haven't txted me so idk whether this is all resolved or not" n so basically she was saying she didn't wanna be friends again bec there's to much drama between us n that she wants to move on from this friend ship n that i need to also but i was seriously begging for her to forgive me n b my friend again bec she means so much to me that i don't wanna lose her / and so then she started to stop answering my txt n i started to get more upset.. now basically for this whole week i haven't eaten my lunch ive thrown it away bec i just have no appetite n i feel sick to my stomach over this whole thing.. n my friend doesn't even no how much trouble ive gone to just try n get her to forgive me.. like i asked one of her friends to please txt me, i went to another one of her friends whom i hate n tried to apologize to her bec i was mean to her over the year n i did that hoping she would do me a favor of getting my friend to talk to me but that didn't work/ so my last option was to go face to face to her n that didn't work.. and i admitted that im sorry, it took me every ounce of courage i had. and im still crying about all this bec shes my best friend but she doesn't want to b friends anymore n i guess its time i move on from all this but idk how bec this whole thing wont leave my mind and every time i think about it i get all upset.. so can u please help?