now what should i do... :/ ?

me and my bestfriend were going to the dance together(as friends) , were gonna ready together and everything, we already bought our dresses. then this guy i really liked asked me and i said yes, so it was gonna be the 3 of us & i was still gonna go get ready at my bestfriends house and drive over there and leave together. but she calls me today saying she doesnt wanna go anymore cuz shes gonna be the thirdwheel and all thiss, i promised her she wasnt going to be & it was gonna be like 3 friends …she said either cancel with him or we werent going (shes my only ride, cant go w/ anyone else). i told her i’ll cancel with him but then listen to this: she canceled the movies with me tonight, the gym tomorrow, and the project we were gonna do together for school AND she said she might not even wanna go to the dance anymore. im just like wtffff? really? finally the guy i like wants me to go to the dance together and this happens…what a great friend.its already gonna be horrible enough canceling with him after i said yes,,, idk if this is even a question but feel free to say whatever cuz im feeling like a peice of crap right now.