WTF happened?(kinda long but seriously needs help!!!!)?

to me it sounds like either she is just super jealous of your new relationship and all the time u are spending with your gf. Its always hard because i've had friends do this to many so many times...it was like they were blinded by that person...they just dropped everyone else around them. Please dont drop your friend....she obviously really cares about you..ALOT. And is super upset and its coming out in angry towards u. If u "changed" so much...maybe u should try and unchange a little bit. Try and hang out with your old friends (girlfriend not invited)....and its okay to talk about ur friends to ur girlfriend...but dont tell them their business. U probably pretty young still...so im postive this will not be ur last g/f. Friends are forever..especially good ones. So try to be a better friend. Invite her to do something fun like mini golfing or go on stubhub.com and get cheap baseball or concert tickets and do something. Im sure it will work out...but u need to try harder! ok! good luck and dont stress too much...it'll be ok :)