Im sad. Cheer me up please ):?

Im sad because my bestfriend is being stolen by a girl I hate that used to steal all my friends in elementary and now she's doing it again only in summer camp and I was supposed to go to that camp with my bestfriend but I didn't get in and she did and now the girl I hate is back and stealing my bff away! and theres nothing I can do cause my bff is to busy in camp to talk to me and she didn't believe me when I told her that the girl is stealing her from me on purpose!! ugh!! Im really sad ):