SHOULD I BE MAD AT MY BEST FRIEND FOR THIS?

i have two best friends donna and kenna. recently i have not been talking to donna and we hate eachother. anyway kenna told me she would have a sleepover with me and then she went to donnas house instead. the next day she hung out with donna again. then she txt messaged me and said sorry 2morrow nite. so then the next day she says she cant because donna, erin, and austin (a guy who is gorgeous and i am in love with and she knows that) are all coming over to swim. she knows that would make me jealous and sad. that was her third time ditching me. i want to txt her and say thanks for ditching me again!! hope you have a blast. but i dont wanna get in another fight with her. i really want to hang out with her. should i not call her anymore and wait for her to invite me over. maybe she never will....idk. im just really depressesd. plz plz plz help