Whos the right one here?

alright let me start by saying it was my birthday alright and then my friend invited me with a bunch of other friends to a resturant. this is not the first time i have been out with them. last time 2 of them left to go to the bathroom to do something idk what and they just left me and my sis alone. they do not actually go to the bathroom they go some place else. and i was quiet about that. so this time on my birthday they both left again. this time they left me with my sis and a friend. so me and my sis r like why do they always leave? so when they came back that friend went ahead and told 1 of them we said that. just a few days ago she called me and told me you talked beind my back blah blah blah i didnt believe it at first cuz ur a nice person and u should feel bad and all that and seriously ruined my day and then she just shut the phone and days went on and she kept tweeting about me and then i finally decided to reply back on twitter im like because i didnt wanna sound rude! and then shes like oh keep talking about me more im like wth! then im like id rather keep quiet becuase i actually care shes like oh atleast u got something right. weve been best friends for a long time and she sent me an inbox saying she forgives me and then im like.. hey (: and she didnt even reply she ignored me. i apologized loads of times. :/