My friend cause me deep heartache :'(?

Ok..I don't know how to start this and I don't if is gonna be long...but first read...I have/had this friend of mines....I only know for a year or so...I really loved her friendship....and still is...I just loved being around her....I use to hug her around...tease her alot...but Love to be around her 'cause I thought she was a special friend to me...she was diffrent then the other friend i had in my life...so i really liked being around her...that was in 11th grade....then 12 grade came....i was always worry about her falling in love cause i didn't wanted to lose her...but she kinda got into this guy who she knew since kinda kids but kinda never talk....she started to like him and...then getting shy whenever he was around....yeah..cool...but then....as time p by...she started to hang around him,....more...with his group ....so she barely hanged out with us anymore and she hang over there...and if she did...it would be when they weren't around or she needed something..but she would only show her face once and a while...but then...i found out that the guy she liked knew that she liked him and they started to be only friends...getting to know each other.....now least she was around...we talk about this like 3 times...and the last time we talk about it i thought we got things settle down and my feelings of being forgotten and not feeling remember out.....and she really did said some amazing stuff during our conversation...i acutally believed her....but...when we ever did got to hang out...things would be werid...we were both quiet...it was very weird for me to be around her...cuz i feel that she only talk to me just because i ask for it..not cuz she wanted to...and that begin to bother me alot....then as time pes by...i started to diss myself from her cuz i also felt in the way of her new friends and her "FRIEND" that she had......and the times i told her to eat togather..she would forget the next day and not mention it so what i did let it go since i thought she had other things to do....but then....she had this sugery she had it to do...and was gone for a few weeks...b4 she left...the goodbye was very weird....like...wHATEVER conversation or how u guys want to put it....then when she got back...things got messy again....i would only say hi...and it would be odd...then i began to notice..se barely hang out with us...and that made my insides boil...it would make me mad...cause she would rather be with them than with us....i knew she had other friends...but she didn't knew how fair her time with us.....then....while she notice that i wasn't paying much attention to her...thats when she would come...around...saying...hi....and makeing...small conversation with me...i only went along....but try to cut it off.....cause it was pointless....then..one day...she told me if i was mad with her...and i said no..when i really wanted to say.. " yes...cuz it hurts to be replace....and it sucks to see that ur more happy with them than us....and i acutally believe in ur words" i really wanted to but....couldn't.....now.....as i kept pushing her away....she would now barely say HI...but not to me..but to out group....she wont even hang around anymore....and that really hurted me...i mean....we wont even talk anymore..nor look at each other....and her b day is in a few days and...i dont what to do...i really miss her guys...i do....but unless something like this has happend to you...you guys would understand...what hurts me is being push away FIRST then come back like nothing......i see her everyday as skool...and to tell u the truth...it makes my insides sicks....i really get angry when i see her over there...and yes..i have tried being around there...and there good ppl///...but i also wanted her to fight for out friendship...not only me...i miss huging her...giving kisses in her cheeks ( is normal, kay? no lezbien....its a cuddle thing -__- ppl) and teaseing her....i do...and i think about it everyday...is a feeling that has been going for alot months....i know i need to talk to her...to settle things out....but im too scare...and shes the one who left us U.U i know shes in love and all...but she really ditch us....and...me...it makes me cry...really...sad....i can't stand seeing her...and if she talks to me...i have the feeling i would just make my self angry and say mean things only cuz im hurt.....guys...is worth it? we only have 3 weeks left of 12th grade...and she means alot...but...im too shy and stubborn to make a move....i dont know :'(